Tyre comprising similar cutouts having different widths

Abstract

A tire (10) includes a tread (14) including circumferential ribs (28, 30, 32) and first and second cutouts. The length of the first cutout (38) in the axial direction (Y) is different from the length of the second cutout (40) in the axial direction (Y). The angle formed by the direction of the first portion and the direction of the second portion of the first cutout (38) is substantially equal to the angle formed by the direction of the first portion and the direction of the second portion of the second cutout (40). The angle formed by the direction of the second portion and the direction of the third portion of the first cutout (38) is substantially equal to the angle formed by the direction of the second portion and the direction of the third portion of the second cutout (40).

Description

TECHNICAL FIELD

[0001] The present invention relates to a pair of tires and to a tire. A tire is understood to mean an outer casing intended to form, by cooperation with a supporting element, for example a rim, a cavity able to be pressurized to a pressure higher than atmospheric pressure. The tire of the invention has a structure exhibiting a general toric shape of rotational symmetry around a main axis of the tire. BACKGROUND

[0002] It is known from the prior art, in particular from FR 3012767, a tire for a passenger vehicle comprising a tread comprising circumferential ribs and incisions formed in each circumferential rib. The incisions comprise a first portion, a second portion and a third portion directly joined together by a first transition zone and a second transition zone each characterized by an angle formed by the average direction of the first portion and the average direction of the second portion and by an angle formed by the average direction of the second portion and the average direction of the third portion.

[0003] Within a single tire family, there are various sizes. In particular, the different sizes have different cross-sectional widths. Thus, the nominal cross-sectional width of a tire of size 205 / 55R16 is strictly less than the nominal cross-sectional width of a tire of size 255 / 60R18.

[0004] When designing different sizes, the tire designer needs to adjust the geometry of the different tread pattern elements, in particular the axial length of the circumferential ribs. Thus, in order to maintain a substantially constant void ratio, the axial length of the circumferential ribs of a tire of size 255 / 60R18 is greater than the axial length of the circumferential ribs of a tire of size 205 / 55R16.

[0005] However, the greater the axial width of a circumferential rib, the greater the axial length of the incisions formed in this circumferential rib. Thus, the designer provides incisions having different axial lengths by changing the reference incision by homothety. This change by homothety in particular causes a change in the angles of the first transition zone and of the second transition zone. Thus, within a family of tires, there can be as many different angles of the first transition zone and of the second transition zone as there are cross-sectional widths of the tires present.

[0006] In order to mold each incision, when the width of the incision is relatively small, molding elements such as knife-slot blades are used. These molding elements have a shape complementary to the incisions that they are intended to mold in the tire, and are generally manufactured by pressing a sheet of metal. In order to provide the angles of the transition zones, it is thus necessary to use as many pressing tools as there are different angles present. Thus, in order to manufacture a family of tires, the number of tools to be used is relatively high, making the manufacture of the molding elements expensive and time-consuming.

[0007] Moreover, in order to reduce the noise generated by these tyres, each cutout opens in the first and second opening zone respectively into each of the first and second circumferential cutouts delimiting the same circumferential rib, so that the azimuthal angle of a point of the first opening zone of one cutout is substantially aligned circumferentially with the azimuthal angle of a point of the second opening zone of another cutout formed in the same circumferential rib.

[0008] Therefore, in addition to the relatively large number of tools, the complexity of their design is increased by the above-mentioned azimuthal angle arrangement constraint. SUMMARY

[0009] The object of the present application is to simplify the manufacture of one or more tyres having the above-mentioned azimuthal angle arrangement constraint.

[0010] To this end, the subject of the present application is a pair of first and second tyres,

[0011] said first tyre comprising a first tread comprising cutouts, said cutouts comprising first cutouts formed in first circumferential ribs delimited by first and second circumferential cutouts adjacent in the axial direction to the first circumferential ribs,

[0012] said second tyre comprising a second tread comprising cutouts, said cutouts comprising second cutouts formed in second circumferential ribs delimited by first and second circumferential cutouts adjacent in the axial direction to the second circumferential ribs,

[0013] the cutouts formed in each of the first and second circumferential ribs opening in the first and second opening zone respectively into each of the first and second circumferential cutouts delimiting said first or second circumferential rib, the azimuthal angle of a point of the first opening zone of a cutout formed in said first or second circumferential rib being substantially aligned circumferentially with the azimuthal angle of a point of the second opening zone of another cutout formed in said first or second circumferential rib,

[0014] each of the first and second cutouts comprising a first portion, a second portion and a third portion, the first and second portions of each of the first and second cutouts being directly joined together by a first inflection zone, the second and third portions of each of the first and second cutouts being directly joined together by a second inflection zone, the second portion of each of the first and second cutouts being arranged in the axial direction between the respective first and third portions of each of the first and second cutouts,

[0015] the average direction of the first portion of each of the first and second cutouts being non-parallel to the average direction of the respective second portion of each of the first and second cutouts,

[0016] the average direction of the third portion of each of the first and second cuts is not parallel to the average direction of the respective second portion of each of the first and second cuts,

[0017] the length of the first cut along the axial direction is different from the length of the second cut along the axial direction,

[0018] the angle formed by the average direction of the first portion and the average direction of the second portion of the first cut is substantially equal to the angle formed by the average direction of the first portion and the average direction of the second portion of the second cut,

[0019] the angle formed by the average direction of the second portion and the average direction of the third portion of the first cut is substantially equal to the angle formed by the average direction of the second portion and the average direction of the third portion of the second cut,

[0020] the length of the second portion of the first cut is substantially equal to the length of the second portion of the second cut, and

[0021] the second portion of the first cut extends along an average direction that is not parallel to the average direction along which the second portion of the second cut extends, and / or the length of the first portion of the first cut is different from the length of the first portion of the second cut and / or the length of the third portion of the first cut is different from the length of the third portion of the second cut.

[0022] Another subject of the application is a tire comprising a tread comprising cuts, the cuts comprising:

[0023] - a first cut formed in a first circumferential rib, the first circumferential rib being delimited by a first circumferential cut and a second circumferential cut adjacent to the first circumferential rib in the axial direction,

[0024] - a second cut formed in a second circumferential rib, the second circumferential rib being delimited by a first circumferential cut and a second circumferential cut adjacent to the second circumferential rib in the axial direction,

[0025] the cuts formed in each of the first and second circumferential ribs open in a first opening zone and a second opening zone, respectively, to each of the first and second circumferential cuts delimiting the first or second circumferential rib, the azimuthal angle of the points of the first opening zone of the cut formed in the first or second circumferential rib being substantially aligned circumferentially with the azimuthal angle of the points of the second opening zone of the other cut formed in the first or second circumferential rib,

[0026] Each of the first and second incisions comprises a first portion, a second portion and a third portion, the first and second portions of each of the first and second incisions being directly joined together by a first inflection zone, the second and third portions of each of the first and second incisions being directly joined together by a second inflection zone, the second portion of each of the first and second incisions being arranged axially between the respective first and third portions of each of the first and second incisions,

[0027] The average direction of the first portion of each of the first and second incisions is not parallel to the average direction of the respective second portion of each of the first and second incisions,

[0028] The average direction of the third portion of each of the first and second incisions is not parallel to the average direction of the respective second portion of each of the first and second incisions,

[0029] The length of the first incision along the axial direction is different from the length of the second incision along the axial direction,

[0030] wherein, in said tyre, the angle formed by the average direction of the first portion and the average direction of the second portion of the first incision is substantially equal to the angle formed by the average direction of the first portion and the average direction of the second portion of the second incision,

[0031] The angle formed by the average direction of the second portion and the average direction of the third portion of the first incision is substantially equal to the angle formed by the average direction of the second portion and the average direction of the third portion of the second incision,

[0032] The length of the second portion of the first incision is substantially equal to the length of the second portion of the second incision, and

[0033] The second portion of the first incision extends along an average direction which is not parallel to the average direction along which the second portion of the second incision extends, and / or the length of the first portion of the first incision is different from the length of the first portion of the second incision and / or the length of the third portion of the first incision is different from the length of the third portion of the second incision.

[0034] The present application, whether with respect to a pair of first and second tyres or with respect to a single tyre, allows to simplify the manufacturing of the moulding elements for the incisions, while respecting the arrangement constraint of the azimuthal angles. In particular, since the angle between the first portion and the second portion and the angle between the second portion and the third portion of each of the first and second incisions are equal, a single pressing tool is sufficient to manufacture two different moulding elements, i.e. in this case moulding elements having different lengths along the axial direction and capable of moulding the first and second incisions.

[0035] To change the length of the axial length of the first and second incisions without changing the angle formed by the average directions of the different portions with respect to each other, the direction in which the second portion of the first and second incisions extends and / or the length of the first portion or of the third portion or one of the lengths is different, while keeping the length of the second portion between the first and second incisions the same. Preferably, the direction in which the second portion of the first and second incisions extends and the length of the first portion and / or of the third portion are all different.

[0036] Unlike incisions composed of two portions in which the inflection zone of the first incision must be offset axially with respect to the inflection zone of the second incision, in this case it is possible to center the incision on the second portion and thus position each of the first and second inflection zones symmetrically with respect to the middle of each incision axially, thus enabling to simplify the tooling for manufacturing the molded element.

[0037] The expression "joined directly together by an inflection zone" means that the incision does not have another portion inserted axially between the two portions in question. The inflection zone embodies the change in curvature of the incision between the portions in question. It is also understood that the incision does not have an interruption between the portions in question.

[0038] The inflection zone comprises an inflection point located on the neutral axis of each incision, which corresponds to the point at which the direction of curvature of the neutral axis changes when passing from the first portion to the second portion (and vice versa).

[0039] Each of the first, second and possible other portions can be rectilinear or curved.

[0040] In the case of rectilinear portions, the determination of the average direction is obvious.

[0041] In the case of curved portions, the average direction of the portion is the direction of the straight line extension connecting the two ends of the portion on the neutral axis. Since the first and second portions are joined directly together by the inflection zone described above, the average direction of the first portion extends along the direction of the straight line passing through one end of the first portion and the inflection point coinciding with the other end of the first portion. The average direction of the second portion extends along the direction of the straight line passing through one end of the second portion and the inflection point coinciding with the other end of the second portion. The average direction of the third portion extends along the direction of the straight line passing through one end of the third portion and the inflection point coinciding with the other end of the third portion.

[0042] The length of the incision along the axial direction is equal to the distance along the circumferential direction between the two most distant points of the incision along the axial direction.

[0043] The junction between the first portion and the second portion forms a turning point since the average direction of the first portion and the average direction of the second portion are not collinear. The junction can be angular or rounded.

[0044] The two average directions are substantially parallel if the angle formed by the two average directions is less than or equal to 5°, preferably less than or equal to 2°.

[0045] Similarly, one angle is substantially equal to the other if the difference between the two angles is less than or equal to 5°, preferably less than or equal to 2°.

[0046] Conversely, one average direction is not parallel to the other if the angle formed by the two average directions is strictly greater than 5°, preferably strictly greater than 2°.

[0047] The angle formed by two average directions is considered to be the smallest angle between the two average directions.

[0048] The length of a portion is the length measured along the average direction extending along said portion. Thus, in the case of a straight portion, the length is the distance measured between the two ends of said portion. In the case of a curved portion, the length is the distance measured along a straight line connecting the two ends of said portion.

[0049] The expression "substantially aligned" means that the azimuthal angles are separated from each other by at most 5% of the average distance of the two cuts formed in the circumferential rib.

[0050] A cut has two main characteristic dimensions on the tread surface: a width and a curved length, such that the curved length is at least equal to twice the width. Thus, a cut is delimited by at least two main lateral surfaces which determine its curved length and which are connected by a bottom, the two main lateral surfaces being separated from each other by a non-zero distance, called the width of the cut.

[0051] On a brand new tyre, the width of a cut is the maximum distance between the two main lateral surfaces, said maximum distance being measured by default at the radial dimension which coincides with the tread surface when the cut has no chamfer, and said maximum distance being measured by default at the radially outermost radial dimension at which the cut is located radially inside the chamfer when the cut has a chamfer. The width is measured substantially perpendicular to the main lateral surfaces. If a width other than the default width is specified (for example a width at a particular dimension), this width is equal to the minimum distance between the two main lateral surfaces at the particular dimension of the cut.

[0052] On a brand new tyre, the depth of a cut is the maximum radial distance between the bottom of the cut and its projection on the ground when the tyre is running. The maximum value of the depth of a cut is called the tread pattern height.

[0053] The cut can be transversal or circumferential.

[0054] A transversal cut means that the cut extends along an average direction forming an angle strictly greater than 30°, preferably greater than or equal to 45°, with the circumferential direction of the tyre, i.e. an angle less than or equal to 60°, preferably strictly less than 45°, with the axial direction of the tyre. The average direction is the shortest curve connecting the two ends of the cut and parallel to the tread surface. The transversal cut can be continuous, i.e. not interrupted by a tread block or another cut, so that the two main side surfaces determining its length are uninterrupted along the length of the transversal cut. The transversal cut can also be discontinuous, i.e. interrupted by one or more tread blocks and / or one or more cuts, so that the two main side surfaces determining its length are interrupted by the one or more tread blocks and / or the one or more cuts.

[0055] A circumferential cut means that the cut extends along an average direction forming an angle less than or equal to 30°, preferably less than or equal to 10°, with the circumferential direction of the tyre, i.e. an angle strictly greater than 60°, preferably strictly greater than 80°, with the axial direction of the tyre. The average direction is the shortest curve connecting the two ends of the cut and parallel to the tread surface. In the case of a continuous circumferential cut, the two ends coincide with each other and are connected by a curve forming a complete circumference around the tyre. The circumferential cut can be continuous, i.e. not interrupted by a tread block or another cut, so that the two main side surfaces determining its length are uninterrupted over the complete circumference around the tyre. The circumferential cut can also be discontinuous, i.e. interrupted by one or more tread blocks and / or one or more cuts, so that the two main side surfaces determining its length are interrupted over the complete circumference around the tyre by the one or more tread blocks and / or the one or more cuts.

[0056] In the case of a transversal cut, the side surfaces are referred to as leading edge face and trailing edge face and are each arranged with a leading edge edge and a trailing edge edge, respectively, the leading edge edge entering the ground surface before the trailing edge edge for a given circumferential line.

[0057] In embodiments for optionally improving braking on dry ground, the or each transversal cut has a chamfer. The chamfer of the transversal cut can be a straight chamfer or a rounded chamfer. The straight chamfer is formed by a planar surface inclined with respect to the leading edge face or the trailing edge face, which planar surface continues up to the leading edge edge or the trailing edge edge circumscribing the transversal cut in the circumferential direction. The rounded chamfer is formed by a curved surface tangentially merging into the leading edge face or the trailing edge face which it continues. The chamfer of the transversal cut is characterized by a height and a width equal to a radial distance and a distance along a direction perpendicular to the leading edge face or the trailing edge face between a common point shared by the leading edge face or the trailing edge face continued by the chamfer and the leading edge edge or the trailing edge edge circumscribing the transversal cut in the circumferential direction, respectively.

[0058] In some embodiments for optionally improving braking on dry ground and lateral grip on dry ground, at least one circumferential cutout has a chamfer. The chamfer of the circumferential cutout can be a straight chamfer or a rounded chamfer. A straight chamfer is formed by a planar surface inclined with respect to the axial inner surface and the axial outer surface, said planar surface continuing up to the axial inner edge or the axial outer edge delimiting the circumferential cutout in the axial direction. A rounded chamfer is formed by a curved surface tangentially merging into the axial inner surface or the axial outer surface on which it continues. The chamfer of the circumferential cutout is characterized by a height and a width equal to a radial distance and an axial distance between a common point shared by the axial inner surface or the axial outer surface on which the chamfer continues and the axial inner edge or the axial outer edge delimiting the circumferential cutout in the axial direction, respectively.

[0059] A circumferential rib is a rib delimited in the axial direction by a first circumferential cutout and a second circumferential cutout which are axially adjacent.

[0060] The tyre according to the application has a substantially toroidal shape around an axis of revolution substantially coinciding with the axis of rotation of the tyre. This axis of revolution defines three directions commonly used by those skilled in the art: axial direction, circumferential direction and radial direction.

[0061] The expression "axial direction" means a direction substantially parallel to the axis of rotation of the tyre, i.e. to the axis of rotation of the tyre.

[0062] The expression "circumferential direction" means a direction substantially simultaneously perpendicular to the axial direction and to the radius of the tyre in each meridian plane (in other words, tangent to a circle centred on the axis of rotation of the tyre).

[0063] The expression "radial direction" means a direction along the radius of the tyre, i.e. any direction intersecting the axis of rotation of the tyre and substantially perpendicular to this axis.

[0064] The expression "median plane of the tyre" (denoted M) means a plane perpendicular to the axis of rotation of the tyre, located axially midway between the two beads and passing through the axial middle of the crown reinforcement.

[0065] The expression "equatorial circumferential plane of the tyre" (denoted E) means a plane passing through the equator of the tyre in a meridian section plane (a plane perpendicular to the circumferential direction and parallel to the radial direction and axial direction) and perpendicular to the median plane and to the radial direction. The equator of the tyre is such an axis in a meridian section plane (a plane perpendicular to the circumferential direction and parallel to the radial direction and axial direction) which is parallel to the axis of rotation of the tyre and equidistant between the radially outermost point of the tread intended to come into contact with the ground and the radially innermost point of the tyre intended to come into contact with the support (for example a rim), the distance between these two points being equal to H.

[0066] The expression "subtropical plane" means a plane parallel to the rotation axis of the tyre and containing the rotation axis of the tyre and perpendicular to the circumferential direction.

[0067] The expressions "radially inner / inside" and "radially outer / outside" mean respectively closer to the rotation axis of the tyre and further away from the rotation axis of the tyre. The expressions "axially inner / inside" and "axially outer / outside" mean respectively closer to the median plane of the tyre and further away from the median plane of the tyre.

[0068] The bead is understood to be the part of the tyre intended to make the tyre attach to a mounting support, such as a wheel comprising a rim. Thus, each bead is intended to come into contact with the flange of the rim, so that it can be attached.

[0069] Any numerical range expressed by the expression "between a and b" denotes the range of values from more than a to less than b (i.e. excluding the end values a and b), whereas any numerical range expressed by the expression "from a to b" means the range of values from a to b (i.e. including the strict end values a and b).

[0070] In a preferred embodiment of the application, the tyre is intended for a passenger vehicle as defined according to the 2021 European Tyre and Rim Technical Organisation or "ETRTO" standard. Within the meaning of the 2021 European Tyre and Rim Technical Organisation or "ETRTO" standard, the section of such a tyre in the meridional section plane is characterised in that the section height H and the nominal section width S satisfy the ratio H / S expressed in percentage at most equal to 90 and at least equal to 20, and the nominal section width S is at least equal to 115 mm, preferably at least equal to 175 mm and at most equal to 385 mm, preferably at most equal to 315 mm. Furthermore, the diameter D at the flange, which defines the diameter of the mounting rim of the tyre, is at least equal to 15 inches and at most equal to 24 inches.

[0071] In a preferred embodiment of the application, the tyre is a "summer" tyre. A summer tyre is understood to be a tyre which is not a "four-season" tyre or an "all-season" tyre or a "winter" tyre.

[0072] A winter tyre is identified in particular by the M+S marking (M+S is an acronym for "mud + snow") and / or the 3PMSF marking (3PMSF is an acronym for "three-peak snowflake"). A four-season tyre or an all-season tyre also has the M+S marking and / or the 3PMSF marking due to the performance on snow. Thus, a summer tyre does not have the M+S marking or the 3PMSF marking.

[0073] In a preferred embodiment, whatever the subject of the application, the cuts following the azimuthal constraint are circumferentially adjacent.

[0074] In a preferred embodiment, each of the first and second circumferential ribs has a substantially constant width, regardless of the subject matter of the application.

[0075] Optionally, when the subject matter of the application is a pair of first and second tires, the first and second tires have:

[0076] - a marking indicating the same brand name, and / or

[0077] - a marking indicating the same model.

[0078] Optionally, when the subject matter of the application is a pair of first and second tires, the length of the first cut along the axial direction is different from the length of the second cut along the axial direction because:

[0079] - the nominal cross-sectional width of the first tire is different from the nominal cross-sectional width of the second tire, and / or

[0080] - the axial length of the first circumferential rib is different from the axial length of the second circumferential rib.

[0081] Thus, for example, when the length of the first cut along the axial direction is strictly less than the length of the second cut along the axial direction:

[0082] - the nominal cross-sectional width of the first tire is strictly less than the nominal cross-sectional width of the second tire, and / or

[0083] - the axial length of the first circumferential rib is strictly less than the axial length of the second circumferential rib.

[0084] Optionally, each cut has a width ranging from 0.2 mm to 3.0 mm, preferably from 0.4 mm to 2.0 mm, preferably from 0.4 mm to 1.0 mm.

[0085] Optionally, each cut has a depth ranging from 2.0 mm to the height of the tread pattern, preferably ranging from 4.0 mm to the height of the tread pattern, more preferably ranging from 5.0 mm to the height of the tread pattern.

[0086] In an optional embodiment, the length of the first cut along the circumferential direction is substantially equal to the length of the second cut along the circumferential direction. Thus, the first and second cuts can be used for a tire or for ribs having different lengths along the axial direction (without considering their length along the circumferential direction (substantially equal)).

[0087] The length of the cut along the circumferential direction is equal to the distance along the circumferential direction between the two most distant points of the cut along the circumferential direction.

[0088] in some embodiments in which the second portion of the first incision extends along an average direction that is not parallel to the average direction along which the second portion of the second incision extends:

[0089] - the first portion of the first incision extends along an average direction that is not parallel to the average direction along which the first portion of the second incision extends, and

[0090] - the third portion of the first incision extends along an average direction that is not parallel to the average direction along which the third portion of the second incision extends.

[0091] in embodiments in which the length of the first portion of the first incision is different from the length of the first portion of the second incision and / or the length of the third portion of the first incision is different from the length of the third portion of the second incision, for example when the length of the first incision along the axial direction is strictly less than the length of the second incision along the axial direction:

[0092] - the length of the first portion of the first incision is strictly less than the length of the first portion of the second incision, and / or

[0093] - the length of the third portion of the first incision is strictly less than the length of the third portion of the second incision.

[0094] Preferably, each of the first incision and the second incision consists of a first portion, a second portion and a third portion. In other words, each incision comprises two ends, one end of the first portion coincides with one end of said incision and one end of the third portion coincides with the other end of said incision.

[0095] In an advantageous but optional variant, in order to reduce the number of pressing tools necessary to manufacture a moulded element comprising incisions of first portion, second portion and third portion, the angle formed by the average direction of the first portion and the average direction of the second portion of each of the first incision and the second incision is substantially equal to the angle formed by the average direction of the second portion and the average direction of the third portion of each of the first incision and the second incision. In other words, the average direction of the third portion is substantially parallel to the average direction of the first portion.

[0096] In other less advantageous and optional variants, the angle formed by the average direction of the first portion and the average direction of the second portion of each of the first incision and the second incision is different from the angle formed by the average direction of the second portion and the average direction of the third portion of each of the first incision and the second incision. In other words, the average direction of the third portion is not parallel to the average direction of the first portion.

[0097] in a more preferred way, which enables to simplify the design of the pressing tools:

[0098] - the length of the first portion of the first cut is equal to the length of the third portion of the first cut, and / or

[0099] - the length of the first portion of the second cut is equal to the length of the third portion of the second cut.

[0100] Optionally, to limit the rattle, the cut comprises a third cut formed in a third circumferential rib, said third circumferential rib being delimited by the first circumferential cut and the second circumferential cut adjacent to the third circumferential rib along the axial direction,

[0101] The cuts formed in the third circumferential rib open in the first opening zone and in the second opening zone respectively to each of the first circumferential cut and the second circumferential cut delimiting said third circumferential rib, the azimuthal orientation of the point of the first opening zone of the cut formed in the third circumferential rib being substantially aligned with the azimuthal orientation of the point of the second opening zone of the other cut formed in the third circumferential rib,

[0102] The third cut comprises a first portion, a second portion and a third portion, the first portion and the second portion of the third cut being directly joined together by a first inflection zone, the second portion and the third portion of the third cut being directly joined together by a second inflection zone, the second portion of the third cut being arranged along the axial direction between the first portion and the third portion of the third cut,

[0103] The average direction of the first portion of the third cut is not parallel to the average direction of the second portion of the third cut,

[0104] The average direction of the third portion of the third cut is not parallel to the average direction of the respective second portion of the third cut,

[0105] The length of the third cut along the axial direction is different from the length of each of the first cut and the second cut along the axial direction,

[0106] The angle formed by the average direction of the first portion of the third cut and the average direction of the second portion of the third cut is substantially equal to the angle formed by the average direction of the first portion and the average direction of the second portion of each of the first cut and the second cut,

[0107] The angle formed by the average direction of the second portion of the third cut and the average direction of the third portion of the third cut is substantially equal to the angle formed by the average direction of the second portion and the average direction of the third portion of each of the first cut and the second cut,

[0108] The length of the second portion of the third cut is substantially equal to the length of the second portion of each of the first cut and the second cut,

[0109] the second portion of the third cut extends along an average direction that is not parallel to the average direction along which the second portion of each of the first and second cuts extends, and / or the length of the first portion of the third cut is different from the length of the first portion of each of the first and second cuts and / or the length of the third portion of the third cut is different from the length of the third portion of each of the first and second cuts.

[0110] In preferred embodiments, the third circumferential rib has a substantially constant width.

[0111] In optional embodiments, the length of the third cut along the circumferential direction is substantially equal to the length of each of the first and second cuts along the circumferential direction.

[0112] In some embodiments in which the second portion of the third cut extends along an average direction that is not parallel to the average direction along which the second portion of each of the first and second cuts extends:

[0113] - the first portion of the third cut extends along an average direction that is not parallel to the average direction of the first portion of each of the first and second cuts, and

[0114] - the third portion of the third cut extends along an average direction that is not parallel to the average direction of the third portion of each of the first and second cuts.

[0115] In embodiments in which the length of the first portion of the third cut is different from the length of the third portion of each of the first and second cuts and / or the length of the third portion of the third cut is different from the length of the third portion of each of the first and second cuts, for example when the length of the first cut along the axial direction is strictly smaller than the length of the second cut along the axial direction and the length of the second cut along the axial direction is strictly smaller than the length of the third cut along the axial direction:

[0116] - the length of the first portion of the first cut is strictly smaller than the length of the first portion of the second cut, and the length of the first portion of the second cut is strictly smaller than the length of the first portion of the third cut, and / or

[0117] - the length of the third portion of the first cut is strictly smaller than the length of the third portion of the second cut, and the length of the third portion of the second cut is strictly smaller than the length of the third portion of the third cut.

[0118] Preferably, the third cut consists of the first portion, the second portion and the third portion.

[0119] In an advantageous, but optional variant form, capable of reducing the number of pressing tools necessary to manufacture the molding element of the incision, the angle formed by the average direction of the first portion of the third incision with the average direction of the second portion is substantially equal to the angle formed by the average direction of the second portion of the third incision with the average direction of the third portion.

[0120] In other, less advantageous and optional variant forms, the angle formed by the average direction of the first portion of the third incision with the average direction of the second portion is different from the angle formed by the average direction of the second portion of the third incision with the average direction of the third portion.

[0121] In an even more preferred way, capable of simplifying the design of the pressing tool, the length of the first portion of the third incision is equal to the length of the third portion of the third incision.

[0122] Optionally and preferably, each of the first and second circumferential incisions has a depth ranging from 4.0 mm to the height of the tread pattern, preferably ranging from 5.0 mm to the height of the tread pattern, more preferably ranging from 5.5 mm to the height of the tread pattern.

[0123] Optionally and preferably, each of the first and second circumferential incisions has a depth ranging from 4.0 mm to the height of the tread pattern, preferably ranging from 5.0 mm to the height of the tread pattern, more preferably ranging from 5.5 mm to the height of the tread pattern.

[0124] Optionally and preferably, each of the first and second circumferential incisions has a width greater than or equal to 1.0 mm, preferably greater than or equal to 4.0 mm, more preferably ranging from 4.0 mm to 20.0 mm.

[0125] In a preferred embodiment, the average direction of each incision forms an angle greater than or equal to 45° with the circumferential direction of the tire. The average direction of an incision is the direction of the straight-line extension connecting the two ends of the incision.

[0126] Conventionally, the or each tire comprises a crown, two sidewalls and two beads, each sidewall connecting each bead to the crown. Still conventionally, the crown comprises a tread and a crown reinforcement arranged radially inboard of the tread. The or each tire also comprises a carcass reinforcement anchored in each bead, extending radially in each sidewall and extending axially in the crown radially inboard of the crown reinforcement.

[0127] Conventionally, the crown reinforcement comprises at least one crown layer comprising reinforcing elements. These reinforcing elements are preferably textile filiform elements or metal filiform elements.

[0128] In an embodiment enabling to obtain performances of a tire called radial tire as defined by the ETRTO, the carcass reinforcement comprises at least one carcass layer, said or each carcass layer comprising carcass filiform reinforcing elements, each carcass filiform reinforcing element extending substantially along a main direction forming an angle with the circumferential direction of the tire ranging in absolute value from 80° to 90°. BRIEF DESCRIPTION OF DRAWINGS

[0129] The application will be better understood by reading the following description, given solely as non-limiting examples, with reference to the attached drawings in which:

[0130] - Figure 1 is a top view of a tread of a tire according to a first embodiment of the application,

[0131] - Figures 2 to 5 is Figure 1 is a schematic view of a portion of the tread of the tire of

[0132] - Figures 6 to 9 is a schematic view similar to Figures 2 to 5 illustrating a cut made in a second circumferential rib,

[0133] - Figures 10 to 13 is a schematic view similar to Figures 2 to 5 illustrating a cut made in a third circumferential rib, and

[0134] - Figure 14 is a top view of the tread of a pair of a first tire and a second tire according to the application. DETAILED DESCRIPTION

[0135] A reference system X, Y, Z is shown, which respectively correspond to the axial direction (Y), the radial direction (Z) and the circumferential direction (X) of the tire.

[0136] With reference to Figure 1 , the tire according to the application is denoted by the reference 10. The tire 10 has a generally toroidal shape around an axis of rotation substantially parallel to the axial direction Y. The tire 10 is intended for a passenger vehicle and has dimensions 205 / 55R16. The tire 10 is a summer tire. The tire 10 is shown as brand new, i.e. when it has not yet been run over.

[0137] The tire 10 comprises a tread 14, which is intended to come into contact with the ground during running. The tire 10 also comprises a conventional structure as described in for example the applications WO2021250331, WO2022074341 or WO2022069819. The tire 10 is obtained by molding a green tire in a mold comprising molding elements, in particular molding elements for the tread 14.

[0138] The tread 14 comprises a tread surface 16, said tread surface 16 being intended to come into contact with the ground when the tyre 10 is running on the ground.

[0139] The tread 14 comprises an axially central portion P0 and first and second axially side portions P1 and P2 arranged axially outside said axially central portion P0 and on either side of said axially central portion P0 with respect to the median plane M of the tyre 10.

[0140] The tread 14 comprises N > 1 circumferential cuts, in this case N = 4 circumferential cuts denoted by the reference numerals 20, 22, 24, 26. Each of the circumferential cuts 20 to 26 has a depth ranging from 4.0 mm to the tread pattern height Hs, preferably ranging from 5.0 mm to the tread pattern height Hs, more preferably ranging from 5.5 mm to the tread pattern height Hs. Each depth is greater than or equal to 50%, preferably 75%, more preferably greater than or equal to 90% of the tread pattern height. In this case, Hs = 7.2 mm, the depth of each of the circumferential cuts 20, 26 is equal to 7.0 mm and the depth of each of the circumferential cuts 22, 24 is equal to 7.2 mm.

[0141] Each of the circumferential cuts 20 to 26 has a width greater than or equal to 1.0 mm, preferably greater than or equal to 4.0 mm, more preferably ranging from 4.0 mm to 20.0 mm. In this case, the width of each of the circumferential cuts 20, 22, 24, 26 is equal to 11.0 mm, 18.0 mm, 7.0 mm and 3.0 mm, respectively.

[0142] The axially central portion P0 comprises k > 1 circumferential ribs, in this case k = 3 first, second and third circumferential ribs 28, 30, 32. Each of the first, second and third circumferential ribs 28 to 32 is delimited axially by a first and a second circumferential cut axially adjacent among the circumferential cuts 20 to 26. Each of the first, second and third circumferential ribs 28 to 32 has a substantially constant length along the axial direction.

[0143] Each of the first 28, second 30 and third 32 circumferential ribs comprises a transverse cut-out formed in said first 28, second 30 and third 32 central ribs and respectively denoted by reference numerals 38, 40, 42. Thus, the cut-out 38 is formed in the same first circumferential rib 28, the cut-out 40 is formed in the same second circumferential rib 30, and the cut-out 42 is formed in the same third circumferential rib 32. Each cut-out 38 opens into each of the circumferential cut-outs 20, 22. Each cut-out 40 opens into each of the circumferential cut-outs 22, 24. Each cut-out 42 opens into each of the circumferential cut-outs 24, 26.

[0144] Each of the cut-outs 38, 40, 42 has an average direction forming an angle greater than or equal to 45° with the circumferential direction X of the tyre 10. Each of the cut-outs 38, 40, 42 has a width ranging from 0.2 mm to 3.0 mm, preferably from 0.4 mm to 2.0 mm, more preferably from 0.4 mm to 1.0 mm (in this case equal to 0.4 mm). Each of the cut-outs 38, 40, 42 has a depth ranging from 2.0 mm to the tread pattern height Hs, preferably ranging from 4.0 mm to the tread pattern height Hs, more preferably ranging from 5.0 mm to the tread pattern height Hs (in this case equal to 5.5 mm).

[0145] Figure 2 A first cut-out 38 formed in the first circumferential rib 28 delimited by the circumferential cut-outs 20, 22 is shown, respectively denoted by reference numerals 382, 384 and 386. The first cut-out 384 is adjacent to each of the first cut-outs 382, 386 along the circumferential direction. Each first cut-out 38 comprises two end portions I and J.

[0146] The length l381 of each first cut-out 382 along the axial direction Y is substantially equal to the length l382 of each first cut-out 384 along the axial direction Y, and substantially equal to the length l383 of each first cut-out 386 along the axial direction Y. In this case, l381 = l382 = l383 = 20 mm.

[0147] The length L381 of each first cut-out 382 along the circumferential direction X is different from the length L382 of each first cut-out 384 along the circumferential direction X. The length L382 of each first cut-out 384 along the circumferential direction X is different from the length L383 of each first cut-out 386 along the circumferential direction X. The length L381 of each first cut-out 382 along the circumferential direction X is different from the length L383 of each first cut-out 386 along the circumferential direction X. In this case, L381 = 16.3 mm, L382 = 17.9 mm, L383 = 23.1 mm.

[0148] Each of the first cuts 382, 384, 386 opens into each of the circumferential cuts 20, 22 in the first opening zone Z1 and the second opening zone Z2, respectively. The azimuthal angle AZ1 of the point (in this case, the end I) of the first opening zone AZ1 of the first cut 382, 384, 386 formed in the first circumferential rib 28 is substantially aligned circumferentially with the azimuthal angle AZ2 of the point (in this case, the end J of the other first cut 382, 384, 386 formed in the first circumferential rib 28 and circumferentially adjacent) of the second opening zone AZ2 of the other first cut 382, 384, 386 formed in the first circumferential rib 28 and circumferentially adjacent.

[0149] Each first cut 382 comprises, and in this case consists of, a first portion 3821, a second portion 3822 and a third portion 3823. Each first cut 384 comprises, and in this case consists of, a first portion 3841, a second portion 3842 and a third portion 3843. Each first cut 386 comprises, and in this case consists of, a first portion 3861, a second portion 3862 and a third portion 3863. Each of the second portions 3822, 3842, 3862 is arranged axially between the respective first portion 3821, 3841, 3861 and the respective third portion 3823, 3843, 3863. Each of the first portions 3821, 3841, 3861 and each of the second portions 3822, 3842, 3862 are directly joined together by a first transition zone 3824, 3844, 3864, respectively. Each of the second portions 3822, 3842, 3862 and each of the third portions 3823, 3843, 3863 are directly joined together by a second transition zone 3825, 3845, 3865, respectively.

[0150] As can be seen in Figures 3 to 5 the length L3821 of the first portion 3821 of each first cut 382 is different from the length L3841 of the first portion 3841 of each first cut 384, and is different from the length L3861 of the first portion 3861 of each first cut 386. The length L3821 of the first portion 3841 of each first cut 384 is different from the length L3861 of the first portion 3861 of each first cut 386. In this case, L3821 = 5.83 mm, L3841 = 5.21 mm, L3861 = 3.12 mm.

[0151] The length L3822 of the second portion 3822 of each first cut 382 is different than the length L3842 of the second portion 3842 of each first cut 384, and different than the length L3862 of the second portion 3862 of each first cut 386. The length L3842 of the second portion 3842 of each first cut 384 is different than the length L3862 of the second portion 3862 of each first cut 386. In this case, L3822 = 16.11 mm, L3842 = 18.35 mm, L3862 = 25.75 mm.

[0152] The length L3823 of the third portion 3823 of each first cut 382 is different than the length L3843 of the third portion 3843 of each first cut 384, and different than the length L3863 of the third portion 3863 of each first cut 386. The length L3843 of the third portion 3843 of each first cut 384 is different than the length L3863 of the third portion 3863 of each first cut 386. In this case, L3823 = 5.83 mm, L3843 = 5.21 mm, L3863 = 3.12 mm.

[0153] It will be noted that the length L3821 of each first portion 3821 of each first cut 382 is equal to the length L3823 of each third portion 3823 of each first cut 382. It will also be noted that the length L3841 of each first portion 3841 of each first cut 384 is equal to the length L3843 of each third portion 3843 of each first cut 384. Finally, it will be noted that the length L3861 of each first portion 3861 of each first cut 386 is equal to the length L3863 of each third portion 3863 of each first cut 386.

[0154] Each of the first portion 3821, the second portion 3822, and the third portion 3823 of the first cut 382 extends along a first average direction D3821, a second average direction D3822, and a third average direction D3823, respectively. Each of the first portion 3841, the second portion 3842, and the third portion 3843 of the first cut 384 extends along a first average direction D3841, a second average direction D3842, and a third average direction D3843, respectively. Each of the first portion 3821, the second portion 3822, and the third portion 3823 of the first cut 386 extends along a first average direction D3861, a second average direction D3862, and a third average direction D3863, respectively.

[0155] The average direction D3821, D3841, D3861 of the first portion 3821, 3841, 3861 and the average direction D3823, D3843, D3863 of the third portion 3823, 3843, 3863 in each of the first cuts 382, 384, 386 are not parallel to the average direction D3822, D3842, D3862 of the respective second portion 3822, 3842, 3862 in each of the first cuts 382, 384, 386.

[0156] The average directions D3821, D3841, D3861 are substantially parallel to each other. The average directions D3822, D3842, D3862 are substantially parallel to each other. The average directions D3823, D3843, D3863 are substantially parallel to each other.

[0157] The average direction D3821 of the first portion 3821 and the average direction D3822 of the second portion 3822 of the first cut 382 form an angle A382. The average direction D3841 of the first portion 3841 and the average direction D3842 of the second portion 3842 of the first cut 384 form an angle A384. The average direction D3861 of the first portion 3861 and the average direction D3862 of the second portion 3862 of the first cut 386 form an angle A386.

[0158] The average direction D3822 of the second portion 3822 and the average direction D3823 of the third portion 3823 of the first cut 382 form an angle B382. The average direction D3842 of the second portion 3842 and the average direction D3843 of the third portion 3843 of the first cut 384 form an angle B384. The average direction D3862 of the second portion 3862 and the average direction D3863 of the third portion 3863 of the first cut 386 form an angle B386.

[0159] Figure 6 Second cuts 40 formed in the second circumferential rib 30 defined by the circumferential cuts 22, 24 are shown, and are represented by reference numerals 402, 404, and 406, respectively. The second cut 404 is circumferentially adjacent to each of the second cuts 402, 406. Each second cut 40 includes two end portions I and J.

[0160] The length I401 of each second cut 402 along the axial direction Y is substantially equal to the length I402 of each second cut 404 along the axial direction Y, and is substantially equal to the length I403 of each second cut 406 along the axial direction Y. In this case, I401 = I402 = I403 = 28 mm.

[0161] The length L401 of each second cut 402 along the circumferential direction X is different from the length L402 of each second cut 404 along the circumferential direction X. The length L402 of each second cut 404 along the circumferential direction X is different from the length L403 of each second cut 406 along the circumferential direction X. The length L401 of each second cut 402 along the circumferential direction X is different from the length L403 of each second cut 406 along the circumferential direction X. In this case, L401 = 16.3 mm, L402 = 17.9 mm, L403 = 23.1 mm.

[0162] Each of the second cuts 402, 404, 406 opens into each of the circumferential cuts 20, 22 in the first opening zone Z1 and in the second opening zone Z2, respectively. The azimuthal angle AZ1 of the point (in this case, the end I) of the first opening zone AZ1 of the second cut 402, 404, 406 formed in the second circumferential rib 30 is substantially aligned along the circumferential direction with the azimuthal angle AZ2 of the point (in this case, the end J of the other second cut 402, 404, 406 formed in the second circumferential rib 30 and circumferentially adjacent to the second cut 402, 404, 406.

[0163] Each second cut 402 comprises, and in this case consists of, a first portion 4021, a second portion 4022 and a third portion 4023. Each second cut 404 comprises, and in this case consists of, a first portion 4041, a second portion 4042 and a third portion 4043. Each second cut 406 comprises, and in this case consists of, a first portion 4061, a second portion 4062 and a third portion 4063. Each of the second portions 4022, 4042, 4062 is arranged axially between the respective first portion 4021, 4041, 4061 and the respective third portion 4023, 4043, 4063. Each of the first portions 4021, 4041, 4061 and each of the second portions 4022, 4042, 4062 are directly joined together by a first transition zone 4024, 4044, 4064, respectively. Each of the second portions 4022, 4042, 4062 and each of the third portions 4023, 4043, 4063 are directly joined together by a second transition zone 4025, 4045, 4065, respectively.

[0164] As in Figures 7 to 9As can be seen, the length L4021 of the first portion 4021 of each second cut 402 is different than the length L4041 of the first portion 4041 of each second cut 404, and different than the length L4061 of the first portion 4061 of each second cut 406. The length L4021 of the first portion 4021 of each second cut 404 is different than the length L4061 of the first portion 4061 of each second cut 406. In this case, L4021 = 9.41 mm, L4041 = 8.75 mm, L4061 = 6.53 mm.

[0165] The length L4022 of the second portion 4022 of each second cut 402 is different than the length L4042 of the second portion 4042 of each second cut 404, and different than the length L4062 of the second portion 4062 of each second cut 406. The length L4042 of the second portion 4042 of each second cut 404 is different than the length L4062 of the second portion 4062 of each second cut 406. In this case, L4022 = 16.11 mm, L4042 = 18.35 mm, L4062 = 25.75 mm.

[0166] The length L4023 of the third portion 4023 of each second cut 402 is different than the length L4043 of the third portion 4043 of each second cut 404, and different than the length L4063 of the third portion 4063 of each second cut 406. The length L4043 of the third portion 4043 of each second cut 404 is different than the length L4063 of the third portion 4063 of each second cut 406. In this case, L4023 = 9.41 mm, L4043 = 8.75 mm, L4063 = 6.53 mm.

[0167] It will be noted that the length L4021 of each first portion 4021 of each second cut 402 is equal to the length L4023 of each third portion 4023 of each second cut 402. It will also be noted that the length L4041 of each first portion 4041 of each second cut 404 is equal to the length L4043 of each third portion 4043 of each second cut 404. Finally, it will be noted that the length L4061 of each first portion 4061 of each second cut 406 is equal to the length L4063 of each third portion 4063 of each second cut 406.

[0168] Each of the first portion 4021, the second portion 4022 and the third portion 4023 of the second cut 402 extends along a first average direction D4021, a second average direction D4022 and a third average direction D4023, respectively. Each of the first portion 4041, the second portion 4042 and the third portion 4043 of the second cut 404 extends along a first average direction D4041, a second average direction D4042 and a third average direction D4043, respectively. Each of the first portion 4021, the second portion 4022 and the third portion 4023 of the second cut 406 extends along a first average direction D4061, a second average direction D4062 and a third average direction D4063, respectively.

[0169] The respective average direction D4021, D4041, D4061 of the first portion 4021, 4041, 4061 and the respective average direction D4023, D4043, D4063 of the third portion 4023, 4043, 4063 of each of the second cuts 402, 404, 406 are not parallel to the average direction D4022, D4042, D4062 of the respective second portion 4022, 4042, 4062 of each of the second cuts 402, 404, 406.

[0170] The average directions D4021, D4041 and D4061 are substantially parallel to each other. The average directions D4022, D4042 and D4062 are substantially parallel to each other. The average directions D4023, D4043 and D4063 are substantially parallel to each other.

[0171] The average direction D4021 of the first portion 4021 and the average direction D4022 of the second portion 4022 of the second cut 402 form an angle A402. The average direction D4041 of the first portion 4041 and the average direction D4042 of the second portion 4042 of the second cut 404 form an angle A404. The average direction D4061 of the first portion 4061 and the average direction D4062 of the second portion 4062 of the second cut 406 form an angle A406.

[0172] The average direction D4022 of the second portion 4022 and the average direction D4023 of the third portion 4023 of the second cut 402 form an angle B402. The average direction D4042 of the second portion 4042 and the average direction D4043 of the third portion 4043 of the second cut 404 form an angle B404. The average direction D4062 of the second portion 4062 and the average direction D4063 of the third portion 4063 of the second cut 406 form an angle B406.

[0173] Figure 10A third cut 42 formed in the third circumferential rib 32 defined by the circumferential cuts 22, 24 is shown, which are respectively designated by reference numerals 422, 424 and 426. The third cut 424 is adjacent to each of the third cuts 422, 426 in the circumferential direction. Each third cut 42 includes two end portions I and J.

[0174] The length I421 of each third cut 422 along the axial direction Y is substantially equal to the length I422 of each third cut 424 along the axial direction Y, and is substantially equal to the length I423 of each third cut 426 along the axial direction Y. In this case, I421 = I422 = I423 = 35 mm.

[0175] The length L421 of each third cut 422 along the circumferential direction X is different from the length L422 of each third cut 424 along the circumferential direction X. The length L422 of each third cut 424 along the circumferential direction X is different from the length L423 of each third cut 426 along the circumferential direction X. The length L421 of each third cut 422 along the circumferential direction X is different from the length L423 of each third cut 426 along the circumferential direction X. In this case, L421 = 16.3 mm, L422 = 17.9 mm, L423 = 23.1 mm.

[0176] Each of the third cuts 422, 424, 426 opens into each of the circumferential cuts 20, 22 in the first and second opening zones Z1 and Z2, respectively. The azimuthal angle AZ1 of the point (in this case, the end portion I) of the first opening zone AZ1 of the second cut 422, 424, 426 formed in the third circumferential rib 32 is substantially aligned in the circumferential direction with the azimuthal angle AZ2 of the point (in this case, the end portion J of the other third cut 422, 424, 426 formed in the third circumferential rib 32 and adjacent in the circumferential direction) of the second opening zone AZ2 of the other third cut 422, 424, 426 formed in the third circumferential rib 32 and adjacent in the circumferential direction.

[0177] Each third cut 422 includes, and in this case consists of, a first portion 4221, a second portion 4222, and a third portion 4223. Each third cut 424 includes, and in this case consists of, a first portion 4241, a second portion 4242, and a third portion 4243. Each third cut 426 includes, and in this case consists of, a first portion 4261, a second portion 4262, and a third portion 4263. Each of the second portions 4222, 4242, 4262 is disposed axially between the respective first portion 4221, 4241, 4261 and the respective third portion 4223, 4243, 4263. Each of the first portions 4221, 4241, 4261 and each of the second portions 4222, 4242, 4262 are directly joined together by a first inflection zone 4224, 4244, 4264, respectively. Each of the second portions 4222, 4242, 4262 and each of the third portions 4223, 4243, 4263 are directly joined together by a second inflection zone 4225, 4245, 4265, respectively.

[0178] As can be seen in Figures 11 to 13 the first portion 4221 of each third cut 422 has a length L4221 that is different from the length L4241 of the first portion 4241 of each third cut 424, and is different from the length L4261 of the first portion 4261 of each third cut 426. The length L4221 of the first portion 4241 of each third cut 424 is different from the length L4261 of the first portion 4261 of each third cut 426. In this case, L4221 = 12.68 mm, L4241 = 12.00 mm, L4261 = 9.71 mm.

[0179] The second portion 4222 of each third cut 422 has a length L4222 that is different from the length L4242 of the second portion 4242 of each third cut 424, and is different from the length L4262 of the second portion 4262 of each third cut 426. The length L4242 of the second portion 4242 of each third cut 424 is different from the length L4262 of the second portion 4262 of each third cut 426. In this case, L4222 = 16.11 mm, L4242 = 18.35 mm, L4262 = 25.75 mm.

[0180] The length L4223 of the third portion 4223 of each third cut 422 is different than the length L4243 of the third portion 4243 of each third cut 424, and different than the length L4263 of the third portion 4263 of each third cut 426. The length L4243 of the third portion 4243 of each third cut 424 is different than the length L4263 of the third portion 4263 of each third cut 426. In this case, L4223 = 12.68 mm, L4243 = 12.00 mm, and L4263 = 9.71 mm.

[0181] It will be noted that the length L4221 of each first portion 4221 of each third cut 422 is equal to the length L4223 of each third portion 4223 of each third cut 422. It will also be noted that the length L4241 of each first portion 4241 of each third cut 424 is equal to the length L4243 of each third portion 4243 of each third cut 424. Finally, it will be noted that the length L4261 of each first portion 4261 of each third cut 426 is equal to the length L4263 of each third portion 4263 of each third cut 426.

[0182] The first portion 4221, the second portion 4222, and the third portion 4223 of the third cut 422 each extend along a first average direction D4221, a second average direction D4222, and a third average direction D4223, respectively. The first portion 4241, the second portion 4242, and the third portion 4243 of the third cut 424 each extend along a first average direction D4241, a second average direction D4242, and a third average direction D4243, respectively. The first portion 4221, the second portion 4222, and the third portion 4223 of the third cut 426 each extend along a first average direction D4261, a second average direction D4262, and a third average direction D4263, respectively.

[0183] The respective average directions D4221, D4241, D4261 of the first portions 4221, 4241, 4261 and the respective average directions D4223, D4243, D4263 of the third portions 4223, 4243, 4263 of each of the third cuts 422, 424, 426 are not parallel to the average direction D4222, D4242, D4262 of the respective second portions 4222, 4242, 4262 of each of the third cuts 422, 424, 426.

[0184] The average directions D4221, D4241, and D4261 are substantially parallel to each other. The average directions D4222, D4242, and D4262 are substantially parallel to each other. The average directions D4223, D4243, and D4263 are substantially parallel to each other.

[0185] The average direction D4221 of the first portion 4221 of the third cut 422 and the average direction D4222 of the second portion 4222 form an angle A422. The average direction D4241 of the first portion 4241 of the third cut 424 and the average direction D4242 of the second portion 4242 form an angle A424. The average direction D4261 of the first portion 4261 of the third cut 426 and the average direction D4262 of the second portion 4262 form an angle A426.

[0186] The average direction D4222 of the second portion 4222 of the third cut 422 and the average direction D4223 of the third portion 4223 form an angle B422. The average direction D4242 of the second portion 4242 of the third cut 424 and the average direction D4243 of the third portion 4243 form an angle B424. The average direction D4262 of the second portion 4262 of the third cut 426 and the average direction D4263 of the third portion 4263 form an angle B426.

[0187] Referring to all Figures 1 to 13 The length l381, l382, l383 of each of the first cuts 382, 384, 386 along the axial direction Y is different from the length l401, l402, l403 of each of the second cuts 402, 404, 406 along the axial direction Y. The length l381, l382, l383 of each of the first cuts 382, 384, 386 along the axial direction Y is different from the length l421, l422, l423 of each of the third cuts 422, 424, 426 along the axial direction Y. The length l401, l402, l403 of each of the second cuts 402, 404, 406 along the axial direction Y is different from the length l421, l422, l423 of each of the third cuts 422, 424, 426 along the axial direction Y. In this case, l381 = l382 = l383 < l401 = l402 = l403 < l421 = l422 = l423.

[0188] The length L381, L382, L383 of each of the first cuts 382, 384, 386 along the circumferential direction X is substantially equal to the respective length L401, L402, L403 of each of the second cuts 402, 404, 406 along the circumferential direction X, and substantially equal to the respective length L421, L422, L423 of each of the third cuts 422, 424, 426 along the circumferential direction X.

[0189] The length L3821, L3841, L3861 of the first portion 3821, 3841, 3861 of each of the first cutouts 382, 384, 386 is different, and in this case strictly smaller, than the length L4021, L4041, L4061 of the first portion 4021, 4041, 4061 of each of the second cutouts 402, 404, 406, respectively. The length L3821, L3841, L3861 of the first portion 3821, 3841, 3861 of each of the first cutouts 382, 384, 386 is different, and in this case strictly smaller, than the length L4221, L4241, L4261 of the first portion 4221, 4241, 4261 of each of the third cutouts 402, 404, 406, respectively. The length L4021, L4041, L4061 of the first portion 4021, 4041, 4061 of each of the second cutouts 402, 404, 406 is different, and in this case strictly smaller, than the length L4221, L4241, L4261 of the first portion 4221, 4241, 4261 of each of the third cutouts 402, 404, 406, respectively.

[0190] The length L3822, L3842, L3862 of the second portion 3822, 3842, 3862 of each of the first cutouts 382, 384, 386 is substantially equal to the length L4022, L4042, L4062 of the second portion 4022, 4042, 4062 of each of the second cutouts 402, 404, 406, respectively. The length L3822, L3842, L3862 of the second portion 3822, 3842, 3862 of each of the first cutouts 382, 384, 386 is substantially equal to the length L4222, L4242, L4262 of the second portion 4222, 4242, 4262 of each of the third cutouts 402, 404, 406, respectively. The length L4022, L4042, L4062 of the second portion 4022, 4042, 4062 of each of the second cutouts 402, 404, 406 is substantially equal to the length L4222, L4242, L4262 of the second portion 4222, 4242, 4262 of each of the third cutouts 402, 404, 406, respectively.

[0191] The second portion 3822, 3842, 3862 of each of the first cuts 382, 384, 386 extends along an average direction D3822, D3842, D3862 that is not parallel to the average direction D4022, D4042, D4062 in which the second portion 4022, 4042, 4062 of each of the second cuts 402, 404, 406 extends, respectively. The second portion 3822, 3842, 3862 of each of the first cuts 382, 384, 386 extends along an average direction D3822, D3842, D3862 that is not parallel to the average direction D4222, D4242, D4262 in which the second portion 4222, 4242, 4262 of each of the third cuts 402, 404, 406 extends, respectively. The second portion 4022, 4042, 4062 of each of the second cuts 402, 404, 406 extends along an average direction D4022, D4042, D4062 that is not parallel to the average direction D4222, D4242, D4262 in which the second portion 4222, 4242, 4262 of each of the third cuts 422, 424, 426 extends, respectively.

[0192] Each of the average directions D3821, D3841, D3861 is not parallel to each of the average directions D4022, D4042, D4062. Each of the average directions D3823, D3843, D3863 is not parallel to each of the average directions D4023, D4043, D4063. Each of the average directions D4221, D4241, D4261 is not parallel to each of the average directions D3821, D3841, D3861. Each of the average directions D4223, D4243, D4263 is not parallel to each of the average directions D3823, D3843, D3863. Each of the average directions D4221, D4241, D4261 is not parallel to each of the average directions D4021, D4041, D4061. Each of the average directions D4223, D4243, D4263 is not parallel to each of the average directions D4023, D4043, D4063.

[0193] The length L3823, L3843, L3863 of the third portion 3823, 3843, 3863 of each of the first cuts 382, 384, 386 is different from, and in this case strictly less than, the length L4023, L4043, L4063 of the third portion 4023, 4043, 4063 of each of the second cuts 402, 404, 406, respectively. The length L3823, L3843, L3863 of the third portion 3823, 3843, 3863 of each of the first cuts 382, 384, 386 is different from, and in this case strictly less than, the length L4223, L4243, L4263 of the third portion 4223, 4243, 4263 of each of the third cuts 402, 404, 406, respectively. The length L4023, L4043, L4063 of the third portion 4023, 4043, 4063 of each of the second cuts 402, 404, 406 is different from, and in this case strictly less than, the length L4223, L4243, L4263 of the third portion 4223, 4243, 4263 of each of the third cuts 402, 404, 406, respectively.

[0194] The angles A382, A384, and A386 are substantially equal to each other. The angles B382, B384, and B386 are substantially equal to each other and substantially equal to the angles A382, A384, A386.

[0195] The angles A402, A404, and A406 are substantially equal to each other. The angles B402, B404, and B406 are substantially equal to each other and substantially equal to the angles A402, A404, A406.

[0196] The angles A422, A424, and A426 are substantially equal to each other. The angles B422, B424, and B426 are substantially equal to each other and substantially equal to the angles A422, A424, A426.

[0197] The angles A382, A402, and A422 are substantially equal to each other. The angles B382, B402, and B422 are substantially equal to each other and substantially equal to the angles A382, A402, and A422.

[0198] The angles A384, A404 and A424 are substantially equal to each other. The angles B384, B404 and B424 are substantially equal to each other and substantially equal to the angles A384, A404 and A424.

[0199] The angles A386, A406 and A426 are substantially equal to each other. The angles B386, B406 and B426 are substantially equal to each other and substantially equal to the angles A386, A406 and A426.

[0200] In this case, A382 = A402 = A422 = B382 = B402 = B422 = A384 = A404 = A424 = B384 = B404 = B424 = A406 = A426 = B386 = B406 = B426 = 54°.

[0201] Figure 14 A pair of first and second tyres 10', 10" according to the application is shown. In this figure, elements similar to those shown in the preceding figures are indicated by the same or similar reference numerals.

[0202] The first and second tyres have a marking indicating the same trade name (in this case, PIRELLI®) and a marking indicating the same model (in this case, P6 APTERO®). ) and a marking indicating the same model (in this case, P6 APTERO®). ) and a marking indicating the same model (in this case, P6 APTERO®).

[0203] The first tyre 10' has a size of 205 / 55R16 and the second tyre 10" has a size of 255 / 60R18. Therefore, the nominal section width of the first tyre (in this case, 205) is strictly less than the nominal section width of the second tyre (in this case, 255).

[0204] The first tyre 10' comprises three first circumferential ribs 28', 30', 32', the axial length l28', l30', l32' of each of which satisfies l28' = l30' = l32' = 28 mm. The second tyre 10" comprises three second circumferential ribs 28", 30", 32", the axial length l28", l30", l32" of each of which satisfies l28" = l30" = l32" = 35 mm. Therefore, the axial length of each of the first circumferential ribs 28', 30', 32' is strictly greater than the axial length of each of the second circumferential ribs 28", 30", 32".

[0205] The first tire 10' includes first cutouts 38', 40', and 42' formed in each of the first circumferential ribs 28', 30', and 32', respectively. Cutouts 40', 42' are identical to cutout 40 in the tire according to the first embodiment described above. The characteristics of cutout 38' can be derived mutatis mutandis from the characteristics of cutouts 40', 42' by turning the cutout 38' relative to a plane perpendicular to the tire's axis of rotation, parallel to the median plane M, and passing through the circumferential cutout 20'.

[0206] The second tire 10″ comprises a second cutout 38″, 40″ and 42″ formed in each of the second circumferential ribs 28″, 30″, 32″ respectively. The cutouts 40″, 42″ are identical to the cutout 42 in the tire according to the first embodiment described above. The characteristics of the cutout 38″ can be deduced mutatis mutandis from the characteristics of the cutouts 40″, 42″ by turning it over relative to a plane perpendicular to the axis of rotation of the tire, parallel to the median plane M and passing through the circumferential cutout 20′.

Claims

1. A pair of first tire (10') and second tire (10"), The first tire (10") includes a first tread (14'), the first tread (14') including cutouts, the cutouts including a first cutout (38', 40', 42') formed in a first circumferential rib (28', 30', 32'), the first circumferential rib (28', 30', 32') being defined by a first circumferential cutout and a second circumferential cutout (20', 22', 24', 26') axially adjacent to the first circumferential rib (28', 30', 32'), The second tire (10") includes a second tread (14"), the second tread (14") including cutouts, the cutouts including second cutouts (38", 40", 42") formed in second circumferential ribs (28", 30", 32"), the second circumferential ribs (28", 30", 32") being defined by first and second circumferential cutouts (20", 22", 24", 26") axially adjacent to the second circumferential ribs (28", 30", 32"), a cutout formed in each of the first and second circumferential ribs opening into each of the first and second circumferential cutouts defining the first or second circumferential rib (28', 30', 32', 28", 30", 32") in a first opening zone (Z1, Z2), respectively, an azimuth angle (AZ1) of a point of a first opening zone (Z1) of the cutout formed in the first or second circumferential rib (28', 30', 32', 28", 30", 32") being substantially aligned in the circumferential direction with an azimuth angle (AZ2) of a point of a second opening zone (Z2) of the other cutout formed in the first or second circumferential rib, Each of the first and second incisions (28', 30', 32', 28", 30", 32") includes a first portion (3821, 3841, 3861, 4021, 4041, 4061), a second portion (3822, 3842, 3862, 4022, 4042, 4062) and a third portion (3823, 3843, 3863, 4023, 4043, 4063). The first portion (3821, 3841, 3861, 4021, 4041, 4061) and the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the two cutouts (382, 384, 386, 402, 404, 406) are directly joined together via a first turning area (3824, 3844, 3864, 4024, 4044, 4064), and the second portion (3822, 3842, 3862, 4022, 4042, 4062) is directly joined together via a first turning area (3824, 3844, 3864, 4024, 4044, 4064). The second portion (3822, 3842, 3862, 4022, 4042, 4062) and the third portion (3823, 3843, 3863, 4023, 4043, 4063) of each of the cutouts and the second cutouts (382, 384, 386, 402, 404, 406) are directly connected via a second turning region (3825, 3845, 3865, 4025, 4045, 4065). Taken together, the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the first and second cutouts is axially arranged between the respective first portion (3821, 3841, 3861, 4021, 4041, 4061) and third portion (3823, 3843, 3863, 4023, 4043, 4063) of each of the first and second cutouts, an average direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion (3821, 3841, 3861, 4021, 4041, 4061) of each of the first and second cuts is not parallel to an average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the first and second cuts, an average direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion (3823, 3843, 3863, 4023, 4043, 4063) of each of the first and second cuts is not parallel to an average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the first and second cuts, The length (1382, 1384, 1386) of the first cutout (382, 384, 386) along the axial direction (Y) is different from the length (1402, 1404, 1406) of the second cutout (402, 404, 406) along the axial direction (Y), an angle (A382, A384, A386) formed by an average direction (D3821, D3841, D3861) of a first portion (3821, 3841, 3861) of the first cutout (382, 384, 386) and an average direction (D3822, D3842, D3862) of a second portion (3822, 3842, 3862) is substantially equal to an angle (A402, A404, A406) formed by an average direction (D4021, D4041, D4061) of a first portion (4021, 4041, 4061) of the second cutout (402, 404, 406) and an average direction (D4022, D4042, D4062) of the second portion (4022, 4042, 4062), An angle (B382, B384, B386) formed by an average direction (D3822, D3842, D3862) of the second portion (3822, 3842, 3862) of the first cutout (382, 384, 386) and an average direction (D3823, D3843, D3863) of the third portion (3823, 3843, 3863) is substantially equal to an angle (B402, B404, B406) formed by an average direction (D4022, D4042, D4062) of the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406) and an average direction (D4023, D4043, D4063) of the third portion (4023, 4043, 4063), The length (L3822, L3842, L3862) of the second portion (3822, 3842, 3862) of the first cutout (382, 384, 386) is substantially equal to the length (L4022, L4042, L4062) of the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406), The second portion (3822, 3842, 3862) of the first cutout (382, 384, 386) extends along an average direction (D3822, D3842, D3862) that is not parallel to the average direction (D4022, D4042, D4062) in which the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406) extends, and / or the length (L3821, L3841, L3862) of the first portion (3821, 3841, 3861) of the first cutout (382, 384, 386) extends. 861) is different from the length (L4021, L4041, L4061) of the first part (4021, 4041, 4061) of the second incision (402, 404, 406) and / or the length (L3823, L3843, L3863) of the third part (3823, 3843, 3863) of the first incision (382, 384, 386) is different from the length (L4023, L4043, L4063) of the third part (4023, 4043, 4063) of the second incision (402, 404, 406).

2. A tire (10), the tire (10) comprising a tread (14), the tread (14) comprising a cutout, the cutout comprising: - a first cutout (38) formed in a first circumferential rib (28), said first circumferential rib (28) being delimited by a first circumferential cutout and a second circumferential cutout (20, 22) axially adjacent to said first circumferential rib, - a second cutout (40) formed in a second circumferential rib (30), said second circumferential rib (30) being delimited by a first circumferential cutout and a second circumferential cutout (22, 24) axially adjacent to said second circumferential rib, The cutout formed in each of the first and second circumferential ribs leads to each of the first and second circumferential cutouts defining the first or second circumferential rib (28, 30) in the first and second opening zones (Z1, Z2), respectively, the azimuth angle (AZ1) of a point of the first opening zone (Z1) of the cutout formed in the first or second circumferential rib (28, 30) being substantially aligned in the circumferential direction with the azimuth angle (AZ2) of a point of the second opening zone (Z2) of the other cutout formed in the first or second circumferential rib, Each of the first and second incisions includes a first portion (3821, 3841, 3861, 4021, 4041, 4061), a second portion (3822, 3842, 3862, 4022, 4042, 4062) and a third portion (3823, 3843, 3863, 4023, 4043, 4063), and the first and second incisions (382, 384, 386, 4021, 4041, 4061) are provided. The first portion (3821, 3841, 3861, 4021, 4041, 4061) and the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the plurality of joints are directly joined together via a first turning area (3824, 3844, 3864, 4024, 4044, 4064), and the first notch and the second notch (382 The second portion (3822, 3842, 3862, 4022, 4042, 4062) and the third portion (3823, 3843, 3863, 4023, 4043, 4063) of each of the plurality of structures (3825, 3845, 3865, 4025, 4045, 4065) are directly joined together via a second turning region (3825). the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the first and second cutouts being axially arranged between the respective first portion (3821, 3841, 3861, 4021, 4041, 4061) and third portion (3823, 3843, 3863, 4023, 4043, 4063) of each of the first and second cutouts, an average direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion (3821, 3841, 3861, 4021, 4041, 4061) of each of the first and second cuts is not parallel to an average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the first and second cuts, an average direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion (3823, 3843, 3863, 4023, 4043, 4063) of each of the first and second cuts is not parallel to an average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the first and second cuts, The length (1382, 1384, 1386) of the first cutout (382, 384, 386) along the axial direction (Y) is different from the length (1402, 1404, 1406) of the second cutout (402, 404, 406) along the axial direction (Y), an angle (A382, A384, A386) formed by an average direction (D3821, D3841, D3861) of a first portion (3821, 3841, 3861) of the first cutout (382, 384, 386) and an average direction (D3822, D3842, D3862) of a second portion (3822, 3842, 3862) is substantially equal to an angle (A402, A404, A406) formed by an average direction (D4021, D4041, D4061) of a first portion (4021, 4041, 4061) of the second cutout (402, 404, 406) and an average direction (D4022, D4042, D4062) of the second portion (4022, 4042, 4062), An angle (B382, B384, B386) formed by an average direction (D3822, D3842, D3862) of the second portion (3822, 3842, 3862) of the first cutout (382, 384, 386) and an average direction (D3823, D3843, D3863) of the third portion (3823, 3843, 3863) is substantially equal to an angle (B402, B404, B406) formed by an average direction (D4022, D4042, D4062) of the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406) and an average direction (D4023, D4043, D4063) of the third portion (4023, 4043, 4063), The length (L3822, L3842, L3862) of the second portion (3822, 3842, 3862) of the first cutout (382, 384, 386) is substantially equal to the length (L4022, L4042, L4062) of the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406), The second portion (3822, 3842, 3862) of the first cutout (382, 384, 386) extends along an average direction (D3822, D3842, D3862) that is not parallel to the average direction (D4022, D4042, D4062) in which the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406) extends, and / or the length (L3821, L3841, L3862) of the first portion (3821, 3841, 3861) of the first cutout (382, 384, 386) extends. 861) is different from the length (L4021, L4041, L4061) of the first part (4021, 4041, 4061) of the second incision (402, 404, 406) and / or the length (L3823, L3843, L3863) of the third part (3823, 3843, 3863) of the first incision (382, 384, 386) is different from the length (L4023, L4043, L4063) of the third part (4023, 4043, 4063) of the second incision (402, 404, 406).

3. A pair of first (10') and second (10") tires according to claim 1 or a tire (10) according to claim 2, wherein: The length (L381, L382, L383) of the first cutout (382, 384, 386) along the circumferential direction (X) is substantially equal to the length (L401, L402, L403) of the second cutout (402, 404, 406) along the circumferential direction (X).

4. A pair of first (10') and second (10") tyres or tyres (10) according to any one of the preceding claims, wherein: The second portion (3822, 3842, 3862) of the first cutout (382, 384, 386) extends along an average direction (D3822, D3842, D3862) that is non-parallel to the average direction (D4022, D4042, D4062) in which the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406) extends: - a first portion (3821, 3841, 3861) of the first cutout (382, 384, 386) extends along an average direction that is not parallel to an average direction in which the first portion (4022, 4042, 4062) of the second cutout extends, and - the third portion (3823, 3843, 3863) of the first cutout (382, 384, 386) extends along an average direction that is not parallel to the average direction in which the third portion (4023, 4043, 4063) of the second cutout extends.

5. A pair of first (10') and second (10") tyres or tyres (10) according to any one of the preceding claims, wherein: The length (1382, 1384, 1386) of the first cutout (382, 384, 386) along the axial direction is strictly smaller than the length (1402, 1404, 1406) of the second cutout (402, 404, 406) along the axial direction: - the length (L3821, L3841, L3861) of the first portion of the first cutout (382, 384, 386) is strictly smaller than the length (L4021, L4041, L4061) of the first portion of the second cutout (402, 404, 406), and / or - the length (L3823, L3843, L3863) of the third portion of the first cutout (382, 384, 386) is strictly smaller than the length (L4023, L4043, L4063) of the third portion of the second cutout (402, 404, 406).

6. A pair of first (10') and second (10") tyres or tyres (10) according to any one of the preceding claims, wherein: An angle (A382, A384, A386, A402, A404, A406) formed by an average direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion (3821, 3841, 3861, 4021, 4041, 4061) of each of the first and second cutouts and an average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) is substantially is equal to the angle (B382, B384, B386, B402, B404, B406) formed by the average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the first and second cuts and the average direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion (3823, 3843, 3863, 4023, 4043, 4063).

7. The tire (10) according to any one of claims 2 to 6, wherein: The cutouts (38, 40, 42) include a third cutout (42) formed in a third circumferential rib (32), the third circumferential rib (32) being defined by a first circumferential cutout and a second circumferential cutout (24, 26) axially adjacent to the third circumferential rib (32), The cutout formed in the third circumferential rib (32) opens into each of the first circumferential cutout and the second circumferential cutout defining the third circumferential rib (32) in the first opening zone and the second opening zone (Z1, Z2), respectively, and the azimuth angle (AZ1) of the point of the first opening zone (Z1) of the cutout formed in the third circumferential rib (32) is substantially aligned with the azimuth angle (AZ2) of the point of the second opening zone (Z2) of the other cutout formed in the third circumferential rib (32) in the circumferential direction, The third incision (422, 424, 426) includes a first portion (4221, 4241, 4261), a second portion (4222, 4242, 4262) and a third portion (4223, 4243, 4263). The first portion (4221, 4241, 4261) and the second portion (4222, 4242, 4262) of the third incision (422, 424, 426) are directly joined together via a first turning zone (4224, 4244, 4264). The second portion (4222, 4242, 4262) and the third portion (4223, 4243, 4263) of the third cutout (422, 424, 426) are directly combined together via a second turning zone (4225, 4245, 4265), and the second portion (4222, 4242, 4262) of the third cutout (422, 424, 426) is axially arranged between the first portion and the third portion (4221, 4241, 4261, 4223, 4243, 4263) of the third cutout (422, 424, 426). an average direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion (3821, 3841, 3861, 4021, 4041, 4061) of the third incision is not parallel to an average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of the third incision, an average direction (D3823, D3843, D3863, D4023, D4043, D4063) of a third portion (3823, 3843, 3863, 4023, 4043, 4063) of the third incision is not parallel to an average direction (D3822, D3842, D3862, D4022, D4042, D4062) of a second portion (3822, 3842, 3862, 4022, 4042, 4062) of the third incision, The length (1421, 1422, 1423) of the third cutout (422, 424, 426) along the axial direction (Y) is different from the length (1381, 1382, 1383, 1401, 1402, 1403) of each of the first and second cutouts along the axial direction (Y), The angle formed by the average direction (D4221, D4241, D4261) of the first portion (4221, 4241, 4261) of the third cutout (422, 424, 426) and the average direction (D4222, D4242, D4262) of the second portion (4222, 4242, 4262) is substantially equal to the angle formed by each of the first and second cutouts (382, 384, 386, 402, 404, 406). an angle formed by an average direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion (3821, 3841, 3861, 4021, 4041, 4061) and an average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062), The angle formed by the average direction (D4222, D4242, D4262) of the second portion (4222, 4242, 4262) of the third cutout (422, 424, 426) and the average direction (D4223, D4243, D4263) of the third portion (4223, 4243, 4263) is substantially equal to the angle formed by each of the first and second cutouts (382, 384, 386, 402, 404, 406). the angle formed by the average direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) and the average direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion (3823, 3843, 3863, 4023, 4043, 4063), the length (L3822, L3842, L3862, L4022, L4042, L4062, L4222, L4242, L4262) of the second portion of the third cutout (422, 424, 426) being substantially equal to the length (L3822, L3842, L3862, L4022, L4042, L4062) of the second portion of each of the first and second cutouts (382, 384, 386, 402, 404, 406), The second portion (4222, 4242, 4262) of the third cutout (422, 424, 426) extends along an average direction (D4223, D4243, D4263) that is not parallel to the average direction in which the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each of the first and second cutouts (382, 384, 386, 402, 404, 406) extends, and / or the length (L4221, L4241, L4261) of the first portion of the third cutout (422, 424, 426) is parallel to the first portion of the second cutout (382, 384, 386, 402, 404, 406). The length (L3821, L3841, L3861, L4021, L4041, L4061, L4221, L4241, L4261) of the first portion of each of the incisions and the second incisions (382, 384, 386, 402, 404, 406) is different and / or the length (L4223, L4243, L4263) of the third portion of the third incision (422, 424, 426) is different from the length (L4223, L4243, L4263) of the third portion of each of the first and second incisions (422, 424, 426).

8. Tyre (10) according to the preceding claim, wherein The length (L421, L422, L423) of the third cutout (422, 424, 426) along the circumferential direction (X) is substantially equal to the length (L381, L382, L383, L401, L402, L403) of each of the first and second cutouts along the circumferential direction (X).

9. The tire (10) according to claim 7 or 8, wherein: The second portion of the third cutout (422, 424, 426) extends along an average direction that is non-parallel to the average direction in which the second portion of each of the first and second cutouts (382, 384, 386, 402, 404, 406) extends: - a first portion (4221, 4241, 4261) of the third cutout (422, 424, 426) extends along an average direction (D4221, D4241, D4261) that is non-parallel to an average direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion of each of the first and second cutouts (382, 384, 386, 402, 404, 406), and -The third portion (4223, 4243, 4263) of the third cutout (422, 424, 426) extends along an average direction (D4223, D4243, D4263) that is not parallel to the average direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion of each of the first and second cutouts (382, 384, 386, 402, 404, 406).

10. The tire (10) according to any one of claims 7 to 9, wherein The length of the first cutouts (382, 384, 386) along the axial direction is strictly smaller than the length of the second cutouts (402, 404, 406) along the axial direction, and the length of the second cutouts (402, 404, 406) along the axial direction is strictly smaller than the length of the third cutouts (422, 424, 426) along the axial direction: - the length (L3821, L3841, L3861) of the first portion of the first incision (382, 384, 386) is strictly smaller than the length (L4021, L4041, L4061) of the first portion of the second incision (402, 404, 406), and the length (L4021, L4041, L4061) of the first portion of the second incision (402, 404, 406) is strictly smaller than the length (L4221, L4241, L4261) of the first portion of the third incision (422, 424, 426), and / or -The length (L3823, L3843, L3863) of the third portion of the first incision (382, 384, 386) is strictly smaller than the length (L4023, L4043, L4063) of the third portion of the second incision (402, 404, 406), and the length (L4023, L4043, L4063) of the third portion of the second incision (402, 404, 406) is strictly smaller than the length (L4223, L4243, L4263) of the third portion of the third incision (422, 424, 426).

11. The tire (10) according to any one of claims 7 to 10, wherein: The angles (A382, A384, A386, A402, A404, A406, A422, A424, A426) formed by the average directions of the first portions of the third cuts (422, 424, 426) and the average directions of the second portions are substantially equal to the angles (B422, B424, B426) formed by the average directions of the respective second portions of the third cuts (382, 384, 386, 402, 404, 406, 422, 424, 426) and the average directions of the third portions.

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