Tyre(s) comprising analogous cuts of different widths

Abstract

A tyre (10) includes a tread (14) including a circumferential rib (28, 30, 32) and first and second cuts. The first cut (38) has a length in the axial direction (Y) different from the length in the axial direction (Y) of the second cut (40). An angle formed by the direction of the first portion and the direction of the second portion of the first cut (38) is substantially equal to an angle formed by the direction of the first portion and the direction of the second portion of the second cut (40). An angle formed by the direction of the second portion and the direction of the third portion of the first cut (38) is substantially equal to an angle formed by the direction of the second portion and the direction of the third portion of the second cut (40).

Description

Tire(s) comprising similar cutouts of different widths

[0001] The present invention relates to a pair of tires and a tire. By tire is meant a bandage intended to form a cavity by cooperating with a support element, for example a rim, this cavity being capable of being pressurized to a pressure higher than atmospheric pressure. A tire of the invention has a structure of substantially toroidal shape of revolution around a main axis of the tire.

[0002] Known from the state of the art, in particular from FR3012767, are tires for passenger vehicles comprising a tread comprising circumferential ribs and cutouts made in each of the circumferential ribs. The cutouts comprise first, second and third portions joined directly to each other by first and second inflection zones each characterized by an angle formed by the mean direction of the first portion and the mean direction of the second portion and by the mean direction of the second portion and the mean direction of the third portion.

[0003] Within the same tire range, several sizes exist. In particular, the different sizes have different section widths. Thus, a tire with a size of 205 / 55R16 has a nominal section width strictly smaller than a tire with a size of 255 / 60R18.

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

[0005] However, the wider a circumferential rib is axially, the greater the axial length of the cutouts made in this circumferential rib. Thus, the designer provides cutouts of different axial lengths by homothetically modifying a reference cutout. This homothetic modification results in particular in a modification of the angle of the first and second inflection zones. Thus, in a range of tires, there may be as many angles of each first and second inflection zone as there are tire section widths.

[0006] In order to mold each cutout, molding elements are used, for example called lamellae when the widths of the cutouts are relatively small. These molding elements have a shape complementary to the cutouts they are intended to mold in the tire and are, most often, manufactured by stamping a metal plate. In order to give the angle of the inflection zone, it is therefore necessary to use as many stamping tools as there are different angles. In order to manufacture a range of tires, the number of tools to be used is therefore relatively large, which makes the molding elements expensive and time-consuming to manufacture.

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

[0008] Thus, in addition to the relatively large number of tools, the complexity of their design is made high due to the azimuth arrangement constraint described previously.

[0009] The invention aims to simplify the manufacture of the tire(s) having the azimuth arrangement constraint described above.

[0010] To this end, the subject of the invention is a pair of a first tire and a second tire, the first tire comprising a first tread comprising cutouts comprising a first cutout formed in a first circumferential rib delimited by first and second circumferential cutouts axially adjacent to the first circumferential rib, the second tire comprising a second tread comprising cutouts comprising a second cutout formed in a second circumferential rib delimited by first and second circumferential cutouts axially adjacent to the second circumferential rib,the cutouts made in each first and second circumferential rib open into each of the first and second circumferential cutouts delimiting said first or second circumferential rib in respectively first and second opening zones, the azimuth of a point of the first opening zone of a cutout made in said first or second circumferential rib is substantially circumferentially aligned with the azimuth of a point of the second opening zone of another cutout made in said first or second circumferential rib, each first and second cutout comprises first, second and third portions, the first portion and the second portion of each first and second cutout being joined directly to each other by a first inflection zone, the second portion and the third portion of each first and second cutout being joined directly to each other by a second inflection zone, the second portion of each first and second cutout being arranged axially between the first and third portions respectively of each first and second cutout, the mean direction of the first portion of each first and second cutout being non-parallel to the mean direction of the second portion respectively of each first and second cutout,the mean direction of the third portion of each first and second cutout being non-parallel to the mean direction of the second portion respectively of each first and second cutout, the first cutout having a length in the axial direction different from the length in the axial direction of the second cutout, an angle formed by the mean direction of the first portion and the mean direction of the second portion of the first cutout being substantially equal to an angle formed by the mean direction of the first portion and the mean direction of the second portion of the second cutout, an angle formed by the mean direction of the second portion and the mean direction of the third portion of the first cutout is substantially equal to an angle formed by the mean direction of the second portion and the mean direction of the third portion of the second cutout,the length of the second portion of the first cutout is substantially equal to the length of the second portion of the second cutout, and the second portion of the first cutout extends in a mean direction not parallel to the mean direction in which the second portion of the second cutout extends and / or the length of the first portion of the first cutout is different from the length of the first portion of the second cutout and / or the length of the third portion of the first cutout is different from the length of the third portion of the second cutout.,

[0011] Another object of the invention is a tire comprising a tread comprising cutouts comprising: - a first cutout made in a first circumferential rib delimited by first and second circumferential cutouts axially adjacent to the first circumferential rib,- a second cutout formed in a second circumferential rib delimited by first and second circumferential cutouts axially adjacent to the second circumferential rib the cutouts formed in each first and second circumferential rib open into each of the first and second circumferential cutouts delimiting said first or second circumferential rib in respectively first and second opening zones, the azimuth of a point of the first opening zone of a cutout formed in said first or second circumferential rib is substantially circumferentially aligned with the azimuth of a point of the second opening zone of another cutout formed in said first or second circumferential rib, each first and second cutout comprises first, second and third portions,the first portion and the second portion of each first and second cutout being directly joined to each other by a first inflection zone, the second portion and the third portion of each first and second cutout being directly joined to each other by a second inflection zone, the second portion of each first and second cutout being arranged axially between the first and third portions respectively of each first and second cutout, the mean direction of the first portion of each first and second cutout being non-parallel to the mean direction of the second portion respectively of each first and second cutout, the mean direction of the third portion of each first and second cutout being non-parallel to the mean direction of the second portion respectively of each first and second cutout,the first cutout having a length in the axial direction different from the length in the axial direction of the second cutout, tire in which an angle formed by the mean direction of the first portion and the mean direction of the second portion of the first cutout is substantially equal to an angle formed by the mean direction of the first portion and the mean direction of the second portion of the second cutout, an angle formed by the mean direction of the second portion and the mean direction of the third portion of the first cutout is substantially equal to an angle formed, by the mean direction of the second portion and the mean direction of the third portion of the second cutout, the length of the second portion of the first cutout is substantially equal to the length of the second portion of the second cutout, and the second portion of the first cutout extends in a mean direction not parallel to the mean direction in which the second portion of the second cutout extends and / or the length of the first portion of the first cutout is different from the length of the first portion of the second cutout and / or the length of the third portion of the first cutout is different from the length of the third portion of the second cutout.

[0012] Whether it is the pair of first and second tires or the tire alone, the invention makes it possible to simplify the manufacture of the molding elements of the cutouts while respecting the constraint of arrangement of the azimuths. Indeed, due to the equality of the angles between the first and second portions and between the second and third portions of each first and second cutout, a single stamping tool is sufficient to manufacture two different molding elements, that is to say here having different lengths in the axial direction and making it possible to mold the first and second cutouts.

[0013] In order to modify the length according to the axial length of the first and second cutouts without modifying the angle formed by the average directions of the different portions with each other, the direction in which the second portions extend and / or one of the lengths of the first or third portions of the first and second cutouts is differentiated while maintaining the length of the second portion between the first and second cutouts equal. Preferably, both the direction in which the second portions extend and the lengths of the first and / or third portions of the first and second cutouts are differentiated.

[0014] Unlike a cutout consisting of two portions in which the inflection zone of the first cutout is necessarily axially offset relative to the inflection zone of the second cutout, here it is possible to center the cutout relative to the second portion and therefore axially position each first and second inflection zone symmetrically relative to the middle of each cutout, which makes it possible to simplify the tooling for manufacturing the molding elements.

[0015] By directly joined to each other by an inflection zone, it is meant that no other portion of said cutout is axially interposed between the two portions concerned. The inflection zone materializes the change in curvature of the cutout between the portions concerned. It is also meant that said cutout is not interrupted between the portions concerned.

[0016] The inflection zone includes an inflection point located on the neutral fiber of each cutout and corresponding to the point at which the neutral fiber changes direction of curvature when passing from the first portion to the second portion and vice versa.

[0017] Each first, second and possible other portion can be rectilinear or curvilinear.

[0018] In the case of a straight portion, the determination of the mean direction is obvious.

[0019] In the case of a curvilinear portion, the mean direction of said portion is the direction in which a straight line joining the two ends of said portion located on the neutral fiber extends. The first and second portions being joined directly to each other by the inflection zone described above, the mean direction of the first portion extends in the direction of a straight line passing through one end of the first portion and the inflection point coincides with the other end of the first portion. The mean direction of the second portion extends in the direction of a straight line passing through one end of the second portion and the inflection point coincides with the other end of the second portion. The mean direction of the third portion extends in the direction of a straight line passing through one end of the third portion and the inflection point coincides with the other end of the third portion.

[0020] The length in the axial direction of said cutout is equal to the distance in the circumferential direction between the two most distant points of said cutout in the axial direction.

[0021] Due to the non-collinearity between the mean direction of the first portion and the mean direction of the second portion, the junction between the first portion and the second portion forms an inflection point. The junction can be angular or rounded.

[0022] Two mean directions are substantially parallel if the angle formed by the two mean directions is less than or equal to 5°, preferably less than or equal to 2°.

[0023] Similarly, an angle is substantially equal to another angle if the difference between the two angles is less than or equal to 5°, preferably less than or equal to 2°.

[0024] Conversely, a mean direction is non-parallel to another mean direction if the angle formed by the two mean directions is strictly greater than 5°, preferably strictly greater than 2°.

[0025] The angle formed by two mean directions is considered to be the smallest angle between these two mean directions.

[0026] The length of a portion is the length measured along the average direction in which the portion extends. Thus, in the case of a rectilinear portion, the length is the distance measured between the two ends of the portion. In the case of a curvilinear portion, the length is the distance measured along the straight line joining the two ends of the portion.

[0027] By substantially aligned, we mean that the azimuths are circumferentially distant from each other by at most 5% of the average distance separating the two cutouts made in said circumferential rib.

[0028] A cut-out has, on the rolling surface, two main characteristic dimensions: a width and a curvilinear length such that the curvilinear length is at least twice the width. A cut-out is therefore delimited by at least two main lateral faces determining its curvilinear length and connected by a bottom, the two main lateral faces being distant from each other by a non-zero distance, called the width of the cut-out.

[0029] The width of a cutout is, on a new tyre, the maximum distance between the two main lateral faces measured, by default and in the case where the cutout does not include a chamfer, at a radial dimension coincident with the rolling surface, and by default and in the case where the cutout includes a chamfer, at the radial dimension most radially outer of the cutout and radially inner of the chamfer. The width is measured substantially perpendicular to the main lateral faces. If a width other than the default width is specified, for example a width at a particular dimension, the width is equal to the smallest distance between the two main lateral faces at the particular dimension of the cutout.

[0030] The depth of a cut is, on a new tire, the maximum radial distance between the bottom of the cut and its projection onto the ground when the tire is rolling. The maximum value of the depths of the cuts is called the tread height.

[0031] A cutout can be transverse or circumferential.

[0032] A transverse cut is such that the cut extends in a mean direction forming an angle strictly greater than 30°, preferably greater than or equal to 45° with the circumferential direction of the tire, i.e. forming an angle less than or equal to 60°, preferably strictly less than 45° with the axial direction of the tire. The mean direction is the shortest curve joining the two ends of the cut and parallel to the tread surface. A transverse cut may be continuous, i.e. not interrupted by a tread block or another cut so that the two main lateral faces determining its length are uninterrupted along the length of the transverse cut. A transverse cut may also be discontinuous, i.e. interrupted by one or more sculpture blocks and / or one or more cuts so that the two main lateral faces determining its length are interrupted by one or more sculpture blocks and / or one or more cuts.

[0033] A circumferential cutout is such that the cutout extends in a mean direction forming an angle less than or equal to 30°, preferably less than or equal to 10° with the circumferential direction of the tire, i.e. forming an angle strictly greater than 60°, preferably strictly greater than 80° with the axial direction of the tire. The mean direction is the shortest curve joining the two ends of the cutout and parallel to the tread surface. In the case of a continuous circumferential cutout, the two ends coincide with each other and are joined by a curve making a complete turn of the tire. A circumferential cutout may be continuous, i.e. not be interrupted by a tread block or another cutout so that the two main lateral faces determining its length are uninterrupted over the entire turn of the tire.A circumferential cutout may also be discontinuous, i.e. interrupted by one or more tread blocks and / or one or more cutouts so that the two main lateral faces determining its length are interrupted by one or more tread blocks and / or one or more cutouts over the entire circumference of the tire.

[0034] In the case of a transverse cut, the side faces are called the leading face and the trailing face and each is provided respectively with a leading edge and a trailing edge, the leading edge being the edge which, for a given circumferential line, enters the contact area before the trailing edge.

[0035] In embodiments for optionally improving braking on dry ground, the or each transverse cutout is provided with chamfers. A chamfer of a transverse cutout may be a straight chamfer or a rounded chamfer. A straight chamfer is formed by a flat face inclined relative to the leading or trailing face which it extends to the leading or trailing edge circumferentially delimiting the transverse cutout. A rounded chamfer is formed by a curved face connecting tangentially to the leading or trailing face which it extends. A chamfer of a transverse cutout is characterized by a height and a width equal respectively to the radial distance and to the distance in a direction perpendicular to the leading or trailing faces between the common point between the leading or trailing face extended by the chamfer and the leading or trailing edge circumferentially delimiting the transverse cut.

[0036] In some embodiments for optionally improving dry braking and also dry transverse grip, at least one of the circumferential cutouts is provided with chamfers. A chamfer of a circumferential cutout may be a straight chamfer or a rounded chamfer. A straight chamfer is formed by a flat face inclined relative to the axially inner and outer face that it extends to the axially inner or outer edge axially delimiting the circumferential cutout. A rounded chamfer is formed by a curved face connecting tangentially to the axially inner or outer face that it extends.A chamfer of a circumferential cutout is characterized by a height and a width equal respectively to the radial distance and the axial distance between the common point between the axially inner or outer face extended by the chamfer and the axially inner or outer edge axially delimiting the circumferential cutout.

[0037] A circumferential rib is a rib axially bounded by axially adjacent first and second circumferential cutouts.

[0038] The tire according to the invention has a substantially toric shape around an axis of revolution substantially coincident with the axis of rotation of the tire. This axis of revolution defines three directions conventionally used by those skilled in the art: an axial direction, a circumferential direction and a radial direction.

[0039] Axial direction means the direction substantially parallel to the axis of revolution of the tire, i.e. the axis of rotation of the tire.

[0040] Circumferential direction means the direction which is, in each meridian plane, substantially perpendicular to both the axial direction and a radius of the tire (in other words, tangent to a circle whose center is on the axis of rotation of the tire).

[0041] Radial direction means the direction along a radius of the tire, that is to say any direction intersecting the axis of rotation of the tire and substantially perpendicular to this axis.

[0042] By median plane of the tire (noted M), we mean the plane perpendicular to the axis of rotation of the tire which is located at the axial midpoint of the two beads and passes through the axial center of the crown reinforcement.

[0043] By equatorial circumferential plane of the tire (noted E), we mean, in a meridian section plane, the plane passing through the equator of the tire, perpendicular to the median plane and to the radial direction. The equator of the tire is, in a meridian section plane (plane perpendicular to the circumferential direction and parallel to the radial and axial directions) the axis parallel to the axis of rotation of the tire and located at equidistance between the radially outermost point of the tread intended to be in contact with the ground and the radially innermost point of the tire intended to be in contact with a support, for example a rim, the distance between these two points being equal to H.

[0044] Meridian plane means a plane parallel to and containing the axis of rotation of the tire and perpendicular to the circumferential direction.

[0045] By radially inner, respectively radially outer, is meant closer to the tire's axis of rotation, respectively further from the tire's axis of rotation. By axially inner, respectively axially outer, is meant closer to the tire's median plane, respectively further from the tire's median plane.

[0046] By bead is meant the portion of the tire intended to allow the tire to be attached to a mounting support, for example a wheel comprising a rim. Thus, each bead is in particular intended to be in contact with a hook on the rim allowing it to be attached.

[0047] Any interval of values ​​designated by the expression "between a and b" represents the domain of values ​​from more than a to less than b (i.e., excluding the limits a and b), while any interval of values ​​designated by the expression "from a to b" means the domain of values ​​from a to b (i.e., including the strict limits a and b).

[0048] The tires are, in preferred embodiments of the invention, intended for passenger vehicles as defined within the meaning of the standard of the European Tyre and Rim Technical Organization or "ETRTO", 2021. Such a tire has a section in a meridian section plane characterized by a section height H and a nominal section width or flange thickness S within the meaning of the standard of the European Tyre and Rim Technical Organization or "ETRTO", 2021 such that the ratio H / S, expressed as a percentage, is at most equal to 90 and is 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. In addition, the hook diameter D, defining the diameter of the rim on which the tire is mounted, is at least equal to 15 inches and at most equal to 24 inches.

[0049] The tires are, in preferred embodiments of the invention, so-called summer tires. By summer, we mean tires which are not so-called 4-season or all-season tires, nor so-called winter tires.

[0050] Winter tires are identified by an M+S marking (M+S being the acronym for "Mud + Snow") and / or 3PMSF (3PMSF being the acronym for "3 Peak Mountain Snow Flake"). 4-season or all-season tires, due to their snow performance also have the M+S and / or 3PMSF markings. Thus, a summer tire does not have an M+S marking, nor a 3PMSF marking.

[0051] In preferred embodiments, regardless of the subject matter of the invention, the cutouts satisfying the azimuth constraint are circumferentially adjacent.

[0052] In preferred embodiments, regardless of the subject matter of the invention, each first and second circumferential rib has a substantially constant width.

[0053] Optionally, when the subject of the invention is a pair of first and second tires, the first and second tires have: - markings indicating the same trademark, and / or - markings indicating the same model.

[0054] Optionally, when the subject of the invention is a pair of first and second tires, the first cutout has a length in the axial direction different from the length in the axial direction of the second cutout because: - the first tire has a nominal section width different from the nominal section width of the second tire, and / or - the first circumferential rib has an axial length different from the axial length of the second circumferential rib.

[0055] Thus, for example, in the case where the first cutout has a length in the axial direction strictly less than the length in the axial direction of the second cutout: - the first tire has a nominal section width strictly less than the nominal section width of the second tire, and / or - the first circumferential rib has an axial length strictly less than the axial length of the second circumferential rib.

[0056] Optionally, each cutout 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.

[0057] Optionally, each cutout has a depth ranging from 2.0 mm to the tread height, preferably ranging from 4.0 mm to the tread height and more preferably ranging from 5.0 mm to the tread height.

[0058] In optional embodiments, the first cutout has a length in the circumferential direction substantially equal to the length in the circumferential direction of the second cutout. Thus, the first and second cutouts can be used for tires or ribs having different lengths in the axial direction without worrying about their lengths in the circumferential direction being substantially equal.

[0059] The length in the circumferential direction of said cutout is equal to the distance in the circumferential direction between the two most distant points of said cutout in the circumferential direction.

[0060] In certain embodiments in which the second portion of the first cutout extends in a mean direction not parallel to the mean direction in which the second portion of the second cutout extends: - the first portion of the first cutout extends in a mean direction not parallel to the mean direction in which the first portion of the second cutout extends, and - the third portion of the first cut extends in a mean direction not parallel to the mean direction in which the third portion of the second cut extends.

[0061] In the embodiments in which the length of the first portion of the first cutout is different from the length of the first portion of the second cutout and / or the length of the third portion of the first cutout is different from the length of the third portion of the second cutout, and for example, in the case where the first cutout has a length in the axial direction strictly less than the length in the axial direction of the second cutout: - the length of the first portion of the first cut is strictly less than the length of the first portion of the second cut, and / or - the length of the third portion of the first cut is strictly less than the length of the third portion of the second cut.

[0062] Preferably, each first and second cutout consists of the first, second and third portions. In other words, each cutout comprising two ends, one end of the first portion is merged with one of the ends of said cutout and one end of the third portion is merged with the other of the ends of said cutout.

[0063] In advantageous but optional variants, so as to reduce the number of stamping tools required for manufacturing the molding elements of the cutouts comprising first, second and third portions, an angle formed by the mean direction of the first portion and the mean direction of the second portion of each first and second cutout is substantially equal to an angle formed by the mean direction of the second portion and the mean direction of the third portion of each first and second cutout. Thus, in other words, the mean direction of the third portion is substantially parallel to the direction average of the first portion.

[0064] In other less advantageous and optional variants, an angle formed by the mean direction of the first portion and the mean direction of the second portion of each first and second cut is different from an angle formed by the mean direction of the second portion and the mean direction of the third portion of each first and second cut. Thus, in other words, the mean direction of the third portion is not parallel to the mean direction of the first portion.

[0065] Even more preferably, allowing the design of stamping tools to be simplified: - 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 - the length of the first portion of the second cut is equal to the length of the third portion of the second cut.

[0066] Optionally, in order to limit the siren, the cutouts comprise a third cutout made in a third circumferential rib delimited by first and second circumferential cutouts axially adjacent to the third circumferential rib, the cutouts made in the third circumferential rib open into each of the first and second circumferential cutouts delimiting said third circumferential rib in first and second opening zones respectively, the azimuth of a point in the first opening zone of a cutout made in said third circumferential rib is substantially circumferentially aligned with the azimuth of a point in the second opening zone of another cutout made in said third circumferential rib the third cutout comprises first, second and third portions,the first portion and the second portion of the third cutout being directly joined to each other by a first inflection zone, the second portion and the third portion of the third cutout being directly joined to each other by a second inflection zone, the second portion of the third cutout being arranged axially between the first and third portions of the third cutout, the mean direction of the first portion of the third cutout being non-parallel to the mean direction of the second portion of the third cutout, the mean direction of the third portion of the third cutout being non-parallel to the mean direction of the second portion of the third cutout, the third cutout having a length in the axial direction different from the length in the axial direction of each first and second cutout, an angle formed by the mean direction of the first portion and the mean direction of the second portion of the third cut is substantially equal to an angle formed by the mean direction of the first portion and the mean direction of the second portion of each first and second cut, an angle formed by the mean direction of the second portion and the mean direction of the third portion of the third cut is substantially equal to an angle formed by the mean direction of the second portion and the mean direction of the third portion of each first and second cut, the length of the second portion of the third cut is substantially equal to the length of the second portion of each first and second cut,the second portion of the third cutout extends in a mean direction not parallel to the mean direction in which the second portion of each first and second cutout extends and / or the length of the first portion of the third cutout is different from the length of the first portion of each first and second cutout and / or the length of the third portion of the third cutout is different from the length of the third portion of each first and second cutout.,

[0067] In preferred embodiments, the third circumferential rib has a substantially constant width.

[0068] In optional embodiments, the third cutout has a length in the circumferential direction substantially equal to the length in the circumferential direction of each first and second cutout.

[0069] In certain embodiments in which the second portion of the third cutout extends in a mean direction not parallel to the mean direction in which the second portion of each first and second cutout extends: - the first portion of the third cut extends in a mean direction not parallel to the mean direction of the first portion of each first and second cut, and - the third portion of the third cut extends in a mean direction not parallel to the mean direction of the third portion of each first and second cut.

[0070] In embodiments wherein the length of the first portion of the third cutout is different from the length of the third portion of each first and second cutout and / or the length of the third portion of the third cutout is different from the length of the third portion of each first and second cutout, and for example, in the case where the first cutout has a length in the axial direction strictly less than the length in the axial direction of the second cutout and the second cutout has a length in the axial direction strictly less than the length in the axial direction of the third cutout: - the length of the first portion of the first cut is strictly less than the length of the first portion of the second cut and the length of the first portion of the second cut is strictly less than the length of the first portion of the third cut, and / or - the length of the third portion of the first cut is strictly less than the length of the third portion of the second cut and the length of the third portion of the second cut is strictly less than the length of the third portion of the third cut.

[0071] Preferably, the third cutout consists of the first, second and third portions.

[0072] In advantageous but optional variants making it possible to reduce the number of stamping tools necessary for the manufacture of the molding elements of the cutouts, an angle formed by the average direction of the first portion and the average direction of the second portion of the third cutout is substantially equal to an angle formed by the average direction of the second portion and the average direction of the third portion of the third cutout.

[0073] In other less advantageous and optional variants, an angle formed by the average direction of the first portion and the average direction of the second portion of the third cut is different from an angle formed by the average direction of the second portion and the average direction of the third portion of the third cut.

[0074] Even more preferably, to simplify the design of the stamping tools, the length of the first portion of the third cutout is equal to the length of the third portion of the third cutout.

[0075] Optionally and preferably, each first and second circumferential cutout has a depth greater than or equal to 50%, preferably 75% and more preferably 90% of the sculpture height.

[0076] Optionally and preferably, each first and second circumferential cutout has a depth ranging from 4.0 mm to the tread height, preferably ranging from 5.0 mm to the tread height and more preferably ranging from 5.5 mm to the tread height.

[0077] Optionally and preferably, each first and second circumferential cutout has a width greater than or equal to 1.0 mm, preferably greater than or equal to 4.0 mm and more preferably ranging from 4.0 mm to 20.0 mm.

[0078] In preferred embodiments, each cutout has a mean direction forming an angle greater than or equal to 45° with the circumferential direction of the tire. The mean direction of the cutout is the direction in which the straight line joining the two ends of the cutout extends.

[0079] Conventionally, the or each tire comprises a crown, two sidewalls, two beads, each sidewall connecting each bead to the crown. Also conventionally, the crown comprises the tread and a crown reinforcement arranged radially inside the tread. The or each tire also comprises a carcass reinforcement anchored in each bead and extending radially in each sidewall and axially in the crown radially inside the crown reinforcement.

[0080] Conventionally, the crown reinforcement comprises at least one crown layer comprising reinforcing elements. These reinforcing elements are preferably textile or metal wire elements.

[0081] In embodiments allowing the performance of so-called radial tires to be obtained, for example as defined by the ETRTO, the carcass reinforcement comprises at least one carcass layer, the or each carcass layer comprising carcass cord reinforcement elements, each carcass cord reinforcement element extending substantially in a main direction forming with the circumferential direction of the tire, an angle, in absolute value, ranging from 80° to 90°.

[0082] The invention will be better understood upon reading the following description, given solely as a non-limiting example and with reference to the drawings in which: - figure 1 is a top view of the tread of a tire according to a first embodiment of the invention, - figures 2 to 5 are schematic views of a portion of the tread of the tire of figure 1 illustrating cutouts made in a first circumferential rib, - figures 6 to 9 are schematic views similar to those of figures 2 to 5 illustrating cutouts made in a second circumferential rib, - figures 10 to 13 are schematic views similar to those of figures 2 to 5 illustrating cutouts made in a third rib circumferential, and - figure 14 is a top view of the treads of a pair of a first tire and a second tire according to the invention.

[0083] An X, Y, Z reference point is shown corresponding to the usual axial (Y), radial (Z) and circumferential (X) directions of a tire.

[0084] With reference to Figure 1, the tire according to the invention is designated by the general reference 10. The tire 10 has a substantially toric shape around an axis of revolution substantially parallel to the axial direction Y. The tire 10 is intended for a passenger vehicle and has dimensions 205 / 55 R16. The tire 10 is a summer tire. The tire 10 is shown in new condition, that is to say not yet having been driven.

[0085] The tire 10 comprises a tread 14 intended to come into contact with a ground when rolling. The tire 10 further comprises a conventional structure, such as for example described in applications WO2021250331, WO2022074341 or WO2022069819. The tire 10 is obtained by molding a raw blank in a mold comprising molding elements, in particular molding elements of the tread 14.

[0086] The tread 14 comprises a rolling surface 16 through which the tread 14 is intended to come into contact with the ground when the tire 10 rolls on the ground.

[0087] The tread 14 comprises an axially central portion PO and first and second axially lateral portions P1, P2 arranged axially outside the axially central portion PO and axially on either side of the axially central portion PO relative to the median plane M of the tire 10.

[0088] The tread 14 comprises N>1 circumferential cutouts, here N=4 circumferential cutouts designated by the references 20, 22, 24, 26. Each circumferential cutout 20 to 26 has a depth ranging from 4.0 mm to the tread height Hs, preferably ranging from 5.0 mm to the tread height Hs and more preferably ranging from 5.5 mm to the tread height Hs. Each depth is greater than or equal to 50%, preferably 75% and more preferably 90% of the tread height. Here, Hs=7.2 mm, the depth of each circumferential cutout 20, 26 being equal to 7.0 mm and the depth of each circumferential cutout 22, 24 being equal to 7.2 mm.

[0089] Each circumferential cutout 20 to 26 has a width greater than or equal to 1.0 mm, preferably greater than or equal to 4.0 mm and more preferably ranging from 4.0 mm to 20.0 mm. Here, the width of each circumferential cutout 20, 22, 24, 26 is respectively equal to 11.0 mm, 18.0 mm, 7.0 mm and 3.0 mm.

[0090] The axially central portion PO comprises k>1 circumferential ribs, here k=3 first, second and third circumferential ribs 28, 30, 32. Each first, second and third circumferential rib 28 to 32 is axially delimited by first and second axially adjacent circumferential cutouts among the circumferential cutouts 20 to 26. Each first, second and third circumferential rib 28 to 32 has a length in the axial direction that is substantially constant.

[0091] Each first, second and third circumferential rib 28, 30, 32 comprises transverse cutouts formed in said first, second and third central rib 28, 30, 32 and respectively designated by the references 38, 40, 42. Thus, the cutouts 38 are formed in the same first circumferential rib 28, the cutouts 40 are formed in the same second circumferential rib 30 and the cutouts 42 are formed in the same third circumferential rib 32. Each cutout 38 opens into each of the circumferential cutouts 20, 22. Each cutout 40 opens into each of the circumferential cutouts 22, 24. Each cutout 42 opens into each of the circumferential cutouts 24, 26.

[0092] Each cutout 38, 40, 42 has a mean direction forming an angle greater than or equal to 45° with the circumferential direction X of the tire 10. Each cutout 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 and here equal to 0.4 mm. Each cutout 38, 40, 42 has a depth ranging from 2.0 mm to the tread height Hs, preferably ranging from 4.0 mm to the tread height Hs and more preferably ranging from 5.0 mm to the tread height Hs and here equal to 5.5 mm.

[0093] In Figure 2, first cutouts 38 are shown, designated respectively by references 382, ​​384 and 386, formed in the first circumferential rib 28 delimited by the circumferential cutouts 20, 22. The first cutout 384 is circumferentially adjacent to each first cutout 382, ​​386. Each first cutout 38 comprises two ends I and J.

[0094] Each first cutout 382 has a length 1381 along the axial direction Y substantially equal to the length I382 along the axial direction Y of each first cutout 384 and substantially equal to the length I383 along the axial direction Y of each first cutout 386. Here 1381=1382=1383=20 mm.

[0095] Each first cutout 382 has a length L381 along the circumferential direction X different from the length L382 along the circumferential direction X of each first cutout 384. Each first cutout 384 has a length L382 along the circumferential direction X different from the length L383 along the circumferential direction X of each first cutout 386. Each first cutout 382 has a length L381 along the circumferential direction X different from the length L383 along the circumferential direction X of each first cutout 386. Here, L381=16.3 mm, L382=17.9 mm and L383=23.1 mm.

[0096] Each first cutout 382, ​​384, 386 opens into each of the circumferential cutouts 20, 22 in respectively first and second opening zones Z1, Z2. The azimuth AZ1 of a point of the first outlet zone AZ1 of a first cutout 382, ​​384, 386 formed in the first circumferential rib 28, here the end I, is substantially circumferentially aligned with the azimuth AZ2 of a point of the second outlet zone AZ2 of another of the first cutouts 382, ​​384, 386 circumferentially adjacent and formed in the first circumferential rib 28, here the end J of another of the first cutouts 382, ​​384, 386 circumferentially adjacent and formed in the first circumferential rib 28.

[0097] Each first cutout 382 comprises, here is made up of, the first, second and third 3821, 3822 and 3823 portions. Each first cutout 384 comprises, here is made up of, the first, second and third 3841, 3842 and 3843 portions. Each first cutout 386 comprises, here is made up of, the first, second and third 3861, 3862 and 3863 portions. Each second portion 3822, 3842, 3862 is arranged axially between the first portion 3821, 3841, 3861 and the corresponding third portion 3823, 3843, 3863. Each first portion 3821, 3841, 3861 and each second portion 3822, 3842, 3862 are joined directly to each other respectively by a first inflection zone 3824, 3844, 3864. Each second portion 3822, 3842, 3862 and each third portion 3823, 3843, 3863 are joined directly to each other respectively by a second inflection zone 3825, 3845, 3865.

[0098] As seen in Figures 3 to 5, the length L3821 of the first portion 3821 of each first cutout 382 is different from the length L3841 of the first portion 3841 of each first cutout 384 and the length L3861 of the first portion 3861 of each first cutout 386. The length L3821 of the first portion 3841 of each first cutout 384 is different from the length L3861 of the first portion 3861 of each first cutout 386. Here, L3821=5.83 mm, L3841=5.21 mm, L3861=3.12 mm.

[0099] The length L3822 of the second portion 3822 of each first cut 382 is different from the length L3842 of the second portion 3842 of each first cutout 384 and the length L3862 of the second portion 3862 of each first cutout 386. The length L3842 of the second portion 3842 of each first cutout 384 is different from the length L3862 of the second portion 3862 of each first cutout 386. Here, Here, L3822=16.11 mm, L3842=18.35 mm, L3862=25.75 mm.

[0100] The length L3823 of the third portion 3823 of each first cutout 382 is different from the length L3843 of the third portion 3843 of each first cutout 384 and the length L3863 of the third portion 3863 of each first cutout 386. The length L3843 of the third portion 3843 of each first cutout 384 is different from the length L3863 of the third portion 3863 of each first cutout 386. Here, L3823=5.83 mm, L3843=5.21 mm, L3863=3.12 mm.

[0101] It will be noted that the length L3821 of each first portion 3821 of each first cutout 382 is equal to the length L3823 of each third portion 3823 of each first cutout 382. It will also be noted that the length L3841 of each first portion 3841 of each first cutout 384 is equal to the length L3843 of each third portion 3843 of each first cutout 384. Finally, it will be noted that the length L3861 of each first portion 3861 of each first cutout 386 is equal to the length L3863 of each third portion 3863 of each first cutout 386.

[0102] Each first, second and third portion 3821, 3822, 3823 of the first cutout 382 extends respectively in a first, second and third average direction D3821, D3822, D3823. Each first, second and third portion 3841, 3842, 3843 of the first cutout 384 extends respectively in a first, second and third average direction D3841, D3842, D3843. Each first, second and third portion 3821, 3822, 3823 of the first cutout 386 extends respectively in a first, second and third average direction D3861, D3862, D3863.

[0103] The mean direction D3821, D3841, D3861 of each first portion 3821, 3841, 3861 and the mean direction D3823, D3843, D3863 of each third portion 3823, 3843, 3863 of each first cutout 382, ​​384, 386 is non-parallel to the mean direction D3822, D3842, D3862 of the second portion 3822, 3842, 3862 respectively of each first cutout 382, ​​384, 386.

[0104] The mean directions D3821, D3841 and D3861 are approximately parallel to each other. The mean directions D3822, D3842 and D3862 are approximately parallel to each other. The mean directions D3823, D3843 and D3863 are substantially parallel to each other.

[0105] The mean direction D3821 of the first portion 3821 and the mean direction D3822 of the second portion 3822 of the first cutout 382 form an angle A382. The mean direction D3841 of the first portion 3841 and the mean direction D3842 of the second portion 3842 of the first cutout 384 form an angle A384. The mean direction D3861 of the first portion 3861 and the mean direction D3862 of the second portion 3862 of the first cutout 386 form an angle A386.

[0106] The mean direction D3822 of the second portion 3822 and the mean direction D3823 of the third portion 3823 of the first cutout 382 form an angle B382. The mean direction D3842 of the second portion 3842 and the mean direction D3843 of the third portion 3843 of the first cutout 384 form an angle B384. The mean direction D3862 of the second portion 3862 and the mean direction D3863 of the third portion 3863 of the first cutout 386 form an angle B386.

[0107] In Figure 6, second cutouts 40 are shown, designated respectively by references 402, 404 and 406, formed in the second circumferential rib 30 delimited by the circumferential cutouts 22, 24. The second cutout 404 is circumferentially adjacent to each second cutout 402, 406. Each second cutout 40 comprises two ends I and J.

[0108] Each second cutout 402 has a length 1401 along the axial direction Y substantially equal to the length 1402 along the axial direction Y of each second cutout 404 and substantially equal to the length 1403 along the axial direction Y of each second cutout 406. Here 1401=1402=1403=28 mm.

[0109] Each second cutout 402 has a length L401 along the circumferential direction X different from the length L402 along the circumferential direction X of each second cutout 404. Each second cutout 404 has a length L402 along the circumferential direction X different from the length L403 along the circumferential direction X of each second cutout 406. Each second cutout 402 has a length L401 along the circumferential direction X different from the length L403 along the circumferential direction X of each second cutout 406. Here, L401=16.3 mm, L402=17.9 mm and L403=23.1 mm.

[0110] Each second cutout 402, 404, 406 opens into each of the circumferential cutouts 20, 22 in respectively first and second opening zones Z1, Z2. The azimuth AZ1 of a point of the first opening zone AZ1 of a second cutout 402, 404, 406 formed in the second circumferential rib 30, here the end I, is substantially circumferentially aligned with the azimuth AZ2 of a point of the second opening zone AZ2 of another of the second cutouts 402, 404, 406 circumferentially adjacent and formed in the second circumferential rib 30, here the end J of another of the second cutouts 402, 404, 406 circumferentially adjacent and formed in the second circumferential rib 30.

[0111] Each second cutout 402 comprises, here is made up of, the first, second and third 4021, 4022 and 4023 portions. Each second cutout 404 comprises, here is made up of, the first, second and third 4041, 4042 and 4043 portions. Each second cutout 406 comprises, here is made up of, the first, second and third 4061, 4062 and 4063 portions. Each second portion 4022, 4042, 4062 is arranged axially between the first portion 4021, 4041, 4061 and the corresponding third portion 4023, 4043, 4063. Each first portion 4021, 4041, 4061 and each second portion 4022, 4042, 4062 are joined directly to each other respectively by a first inflection zone 4024, 4044, 4064. Each second portion 4022, 4042, 4062 and each third portion 4023, 4043, 4063 are joined directly to each other respectively by a second inflection zone 4025, 4045, 4065.

[0112] As seen in Figures 7 to 9, the length L4021 of the first portion 4021 of each second cutout 402 is different from the length L4041 of the first portion 4041 of each second cutout 404 and the length L4061 of the first portion 4061 of each second cutout 406. The length L4021 of the first portion 4041 of each second cutout 404 is different from the length L4061 of the first portion 4061 of each second cutout 406. Here, L4021=9.41 mm, L4041=8.75 mm, L4061=6.53 mm.

[0113] The length L4022 of the second portion 4022 of each second cutout 402 is different from the length L4042 of the second portion 4042 of each second cutout 404 and the length L4062 of the second portion 4062 of each second cutout 406. The length L4042 of the second portion 4042 of each second cutout 404 is different from the length L4062 of the second portion 4062 of each second cutout 406. Here, Here, L4022=16.11 mm, L4042=18.35 mm, L4062=25.75 mm.

[0114] The length L4023 of the third portion 4023 of each second cutout 402 is different from the length L4043 of the third portion 4043 of each second cutout 404 and the length L4063 of the third portion 4063 of each second cutout 406. The length L4043 of the third portion 4043 of each second cutout 404 is different from the length L4063 of the third portion 4063 of every second cut 406. Here, L4023=9.41 mm, L4043=8.75 mm, L4063=6.53 mm.

[0115] It will be noted that the length L4021 of each first portion 4021 of each second cutout 402 is equal to the length L4023 of each third portion 4023 of each second cutout 402. It will also be noted that the length L4041 of each first portion 4041 of each second cutout 404 is equal to the length L4043 of each third portion 4043 of each second cutout 404. Finally, it will be noted that the length L4061 of each first portion 4061 of each second cutout 406 is equal to the length L4063 of each third portion 4063 of each second cutout 406.

[0116] Each first, second and third portion 4021, 4022, 4023 of the second cutout 402 extends respectively in a first, second and third average direction D4021, D4022, D4023. Each first, second and third portion 4041, 4042, 4043 of the second cutout 404 extends respectively in a first, second and third average direction D4041, D4042, D4043. Each first, second and third portion 4021, 4022, 4023 of the second cutout 406 extends respectively in a first, second and third average direction D4061, D4062, D4063.

[0117] The mean direction D4021, D4041, D4061 of each first portion 4021, 4041, 4061 and the mean direction D4023, D4043, D4063 of each third portion 4023, 4043, 4063 of each second cutout 402, 404, 406 is non-parallel to the mean direction D4022, D4042, D4062 of the second portion 4022, 4042, 4062 respectively of each second cutout 402, 404, 406.

[0118] The mean directions D4021, D4041 and D4061 are substantially parallel to each other. The mean directions D4022, D4042 and D4062 are substantially parallel to each other. The mean directions D4023, D4043 and D4063 are substantially parallel to each other.

[0119] The mean direction D4021 of the first portion 4021 and the mean direction D4022 of the second portion 4022 of the second cutout 402 form an angle A402. The mean direction D4041 of the first portion 4041 and the mean direction D4042 of the second portion 4042 of the second cutout 404 form an angle A404. The mean direction D4061 of the first portion 4061 and the mean direction D4062 of the second portion 4062 of the second cutout 406 form an angle A406.

[0120] The average direction D4022 of the second portion 4022 and the average direction D4023 of the third portion 4023 of the second cutout 402 form an angle B402. The mean direction D4042 of the second portion 4042 and the mean direction D4043 of the third portion 4043 of the second cutout 404 form an angle B404. The mean direction D4062 of the second portion 4062 and the mean direction D4063 of the third portion 4063 of the second cutout 406 form an angle B406.

[0121] In Figure 10, third cutouts 42 are shown, designated respectively by references 422, 424 and 426, formed in the third circumferential rib 32 delimited by the circumferential cutouts 22, 24. The third cutout 424 is circumferentially adjacent to each third cutout 422, 426. Each third cutout 42 comprises two ends I and J.

[0122] Each third cutout 422 has a length 1421 along the axial direction Y substantially equal to the length 1422 along the axial direction Y of each third cutout 424 and substantially equal to the length 1423 along the axial direction Y of each third cutout 426. Here 1421=1422=1423=35 mm.

[0123] Each third cutout 422 has a length L421 along the circumferential direction X different from the length L422 along the circumferential direction X of each third cutout 424. Each third cutout 424 has a length L422 along the circumferential direction X different from the length L423 along the circumferential direction X of each third cutout 426. Each third cutout 422 has a length L421 along the circumferential direction X different from the length L423 along the circumferential direction X of each third cutout 426. Here, L421=16.3 mm, L422=17.9 mm and L423=23.1 mm.

[0124] Each third cutout 422, 424, 426 opens into each of the circumferential cutouts 20, 22 in respectively first and second opening zones Z1, Z2. The azimuth AZ1 of a point of the first outlet zone AZ1 of a second cutout 422, 424, 426 formed in the third circumferential rib 32, here the end I, is substantially circumferentially aligned with the azimuth AZ2 of a point of the second outlet zone AZ2 of another of the third cutouts 422, 424, 426 circumferentially adjacent and formed in the third circumferential rib 32, here the end J of another of the third cutouts 422, 424, 426 circumferentially adjacent and formed in the third circumferential rib 32.

[0125] Each third cutout 422 comprises, here is made up of, the first, second and third 4221, 4222 and 4223 portions. Each third cutout 424 comprises, here is made up of, the first, second and third 4241, 4242 and 4243 portions. Each third cutout 426 comprises, here is made up of, the first, second and third 4261, 4262 and 4263 portions. Each second portion 4222, 4242, 4262 is arranged axially between the corresponding first portion 4221, 4241, 4261 and third portion 4223, 4243, 4263. Each first portion 4221, 4241, 4261 and each second portion 4222, 4242, 4262 are joined directly to each other respectively by a first inflection zone 4224, 4244, 4264. Each second portion 4222, 4242, 4262 and each third portion 4223, 4243, 4263 are joined directly to each other respectively by a second inflection zone 4225, 4245, 4265.

[0126] As seen in Figures 11 to 13, the length L4221 of the first portion 4221 of each third cutout 422 is different from the length L4241 of the first portion 4241 of each third cutout 424 and the length L4261 of the first portion 4261 of each third cutout 426. The length L4221 of the first portion 4241 of each third cutout 424 is different from the length L4261 of the first portion 4261 of each third cutout 426. Here, L4221=12.68 mm, L4241=12.00 mm, L4261=9.71 mm.

[0127] The length L4222 of the second portion 4222 of each third cutout 422 is different from the length L4242 of the second portion 4242 of each third cutout 424 and the length L4262 of the second portion 4262 of each third cutout 426. The length L4242 of the second portion 4242 of each third cutout 424 is different from the length L4262 of the second portion 4262 of each third cutout 426. Here, Here, L4222=16.11 mm, L4242=18.35 mm, L4262=25.75 mm.

[0128] The length L4223 of the third portion 4223 of each third cutout 422 is different from the length L4243 of the third portion 4243 of each third cutout 424 and the length L4263 of the third portion 4263 of each third cutout 426. The length L4243 of the third portion 4243 of each third cutout 424 is different from the length L4263 of the third portion 4263 of each third cutout 426. Here, L4223=12.68 mm, L4243=12.00 mm, L4263=9.71 mm.

[0129] It will be noted that the length L4221 of each first portion 4221 of each third cutout 422 is equal to the length L4223 of each third portion 4223 of each third cutout 422. It will also be noted that the length L4241 of each first portion 4241 of each third cutout 424 is equal to the length L4243 of each third portion 4243 of each third cutout 424. It will finally be noted that the length L4261 of each first portion 4261 of each third cutout 426 is equal to the length L4263 of each third portion 4263 of each third cutout 426.

[0130] Each first, second and third portion 4221, 4222, 4223 of the third cutout 422 extends respectively in a first, second and third average direction D4221, D4222, D4223. Each first, second and third portion 4241, 4242, 4243 of the third cutout 424 extends respectively in a first, second and third average direction D4241, D4242, D4243. Each first, second and third portion 4221, 4222, 4223 of the third cutout 426 extends respectively in a first, second and third average direction D4261, D4262, D4263.

[0131] The mean direction D4221, D4241, D4261 of each first portion 4221, 4241, 4261 and the mean direction D4223, D4243, D4263 of each third portion 4223, 4243, 4263 of each third cutout 422, 424, 426 is non-parallel to the mean direction D4222, D4242, D4262 of the second portion 4222, 4242, 4262 respectively of each third cutout 422, 424, 426.

[0132] The mean directions D4221, D4241 and D4261 are substantially parallel to each other. The mean directions D4222, D4242 and D4262 are substantially parallel to each other. The mean directions D4223, D4243 and D4263 are substantially parallel to each other.

[0133] The mean direction D4221 of the first portion 4221 and the mean direction D4222 of the second portion 4222 of the third cutout 422 form an angle A422. The mean direction D4241 of the first portion 4241 and the mean direction D4242 of the second portion 4242 of the third cutout 424 form an angle A424. The mean direction D4261 of the first portion 4261 and the mean direction D4262 of the second portion 4262 of the third cutout 426 form an angle A426.

[0134] The mean direction D4222 of the second portion 4222 and the mean direction D4223 of the third portion 4223 of the third cutout 422 form an angle B422. The mean direction D4242 of the second portion 4242 and the mean direction D4243 of the third portion 4243 of the third cutout 424 form an angle B424. The mean direction D4262 of the second portion 4262 and the mean direction D4263 of the third portion 4263 of the third cutout 426 form an angle B426.

[0135] With reference to all of FIGS. 1 to 13, each first cutout 382, ​​384, 386 has a length 1381, 1382, 1383 in the axial direction Y different from the length 1401, 1402, 1403 in the axial direction Y of each second cutout 402, 404, 406. Each first cutout 382, ​​384, 386 has a length 1381, 1382, 1383 along the axial direction Y different from the length 1421, I422, I423 along the axial direction Y of each third cutout 422, 424, 426. Each second cutout 402, 404, 406 has a length 1401, I402, I403 along the axial direction Y different from the length 1421, I422, I423 along the axial direction Y of each third cutout 422, 424, 426. Here, 1381=1382=1383 < 1401=1402=1403 < 1421=1422=1423.

[0136] Each first cutout 382, ​​384, 386 has a length L381, L382, L383 along the circumferential direction X substantially equal to the length L401, L402, L403 along the circumferential direction X respectively of each second cutout 402, 404, 406 and substantially equal to the length L421, L422, L423 along the circumferential direction X respectively of each third cutout 422, 424, 426.

[0137] The length L3821, L3841, L3861 of the first portion 3821, 3841, 3861 of each first cutout 382, ​​384, 386 is different respectively from, here strictly less than the length L4021, L4041, L4061 of the first portion 4021, 4041, 4061 of each second cutout 402, 404, 406. The length L3821, L3841, L3861 of the first portion 3821, 3841, 3861 of each first cutout 382, ​​384, 386 is different respectively from, here strictly less than the length L4221, L4241, L4261 of the first portion 4221, 4241, 4261 of each third cutout 402, 404, 406. The length L4021, L4041, L4061 of the first portion 4021, 4041, 4061 of each second cutout 402, 404, 406 is different respectively from, here strictly less than, the length L4221, L4241, L4261 of the first portion 4221, 4241, 4261 of each third cutout 402, 404, 406.

[0138] The length L3822, L3842, L3862 of the second portion 3822, 3842, 3862 of each first cutout 382, ​​384, 386 is substantially equal respectively to the length L4022, L4042, L4062 of the second portion 4022, 4042, 4062 of each second cutout 402, 404, 406. The length L3822, L3842, L3862 of the second portion 3822, 3842, 3862 of each first cutout 382, ​​384, 386 is substantially equal respectively to the length L4222, L4242, L4262 of the second portion 4222, 4242, 4262 of each third cutout 402, 404, 406. The length L4022, L4042, L4062 of the second portion 4022, 4042, 4062 of each second cutout 402, 404, 406 is substantially equal respectively to the length L4222, L4242, L4262 of the second portion 4222, 4242, 4262 of each third cutout 402, 404, 406.

[0139] The second portion 3822, 3842, 3862 of each first cutout 382, ​​384, 386 extends in the mean direction D3822, D3842, D3862 not parallel respectively to the mean direction D4022, D4042, D4062 in which the second portion 4022, 4042, 4062 of each second cutout 402, 404, 406 extends. The second portion 3822, 3842, 3862 of each first cutout 382, ​​384, 386 extends along the mean direction D3822, D3842, D3862 not parallel respectively to the mean direction D4222, D4242, D4262 along which the second portion 4222, 4242, 4262 of each third cutout 402, 404, 406 extends. The second portion 4022, 4042, 4062 of each second cutout 402, 404, 406 extends along the mean direction D4022, D4042, D4062 not parallel respectively to the mean direction D4222, D4242, D4262 along which the second portion 4222, 4242, 4262 of each third cutout 422, 424, 426 extends.

[0140] Each mean direction D3821 , D3841 , D3861 is non-parallel to each mean direction D4022, D4042, D4062. Each mean direction D3823, D3843, D3863 is non-parallel to each mean direction D4023, D4043, D4063. Each mean direction D4221 , D4241 , D4261 is non-parallel to each mean direction D3821 , D3841 , D3861. Each mean direction D4223, D4243, D4263 is non-parallel to each mean direction D3823, D3843, D3863. Each mean direction D4221 , D4241 , D4261 is non-parallel to each mean direction D4021 , D4041 , D4061. Each mean direction D4223, D4243, D4263 not parallel to each mean direction D4023, D4043, D4063.

[0141] The length L3823, L3843, L3863 of the third portion 3823, 3843, 3863 of each first cutout 382, ​​384, 386 is different respectively from, here strictly less than the length L4023, L4043, L4063 of the third portion 4023, 4043, 4063 of each second cutout 402, 404, 406. The length L3823, L3843, L3863 of the third portion 3823, 3843, 3863 of each first cutout 382, ​​384, 386 is different respectively from, here strictly less than the length L4223, L4243, L4263 of the third portion 4223, 4243, 4263 of each third cutout 402, 404, 406. The length L4023, L4043, L4063 of the third portion 4023, 4043, 4063 of each second cutout 402, 404, 406 is different respectively from, here strictly less than, the length L4223, L4243, L4263 of the third portion 4223, 4243, 4263 of each third cutout 402, 404, 406.

[0142] Angles A382, A384 and A386 are substantially equal to each other. Angles B382, B384 and B386 are substantially equal to each other and substantially equal to angles A382, A384, A386.

[0143] Angles A402, A404 and A406 are substantially equal to each other. Angles B402, B404 and B406 are substantially equal to each other and substantially equal to angles A402, A404, A406.

[0144] Angles A422, A424 and A426 are substantially equal to each other. Angles B422, B424 and B426 are substantially equal to each other and substantially equal to angles A422, A424, A426.

[0145] Angles A382, A402 and A422 are substantially equal to each other. Angles B382, B402 and B422 are substantially equal to each other and substantially equal to angles A382, A402 and A422.

[0146] Angles A384, A404 and A424 are substantially equal to each other. Angles B384, B404 and B424 are substantially equal to each other and substantially equal to angles A384, A404 and A424.

[0147] Angles A386, A406 and A426 are substantially equal to each other. Angles B386, B406 and B426 are substantially equal to each other and substantially equal to angles A386, A406 and A426.

[0148] Here, A382=A402=A422=B382=B402=B422=A384=A404=A424=B384=B404=B424=A406= A426=B386=B406=B426=54°.

[0149] Figure 14 shows a pair according to the invention of a first tire 10' and a second tire 10”. In this figure, elements similar to those shown in the previous figures are designated by identical or similar references.

[0150] The first and second tires have markings indicating the same trademark, here MICHELIN®, and markings indicating the same model, here PRIMACY®.

[0151] The first 10' tire has dimensions 205 / 55R16 while the second 10" tire has dimensions 255 / 60R18. Thus, the first tire has a nominal section width (here 205) strictly less than the nominal section width (here 255) of the second tire.

[0152] The first tire 10' comprises three first circumferential ribs 28', 30', 32' each having an axial length I28', I30', I32' such that I28 -I30 -I32 -28 mm. The second tire 10” comprises three second circumferential ribs 28”, 30”, 32” each having an axial length I28”, I30”, I32” such that I28”=I30”=I32”=35 mm. Thus, each first circumferential rib 28', 30', 32' has an axial length strictly greater than the axial length of each second circumferential rib 28”, 30”, 32”.

[0153] The first tire 10' comprises first cutouts 38', 40' and 42' formed respectively in each first circumferential rib 28', 30', 32'. The cutouts 40', 42' are identical to the cutouts 40 of the tire according to the first embodiment described above. The characteristics of the cutouts 38' are deduced mutatis mutandis from those of the cutouts 40', 42' by turning them over with respect to a plane perpendicular to the axis of rotation of the tire, parallel to the plane median M and passing through the circumferential cutout 20'.

[0154] The second 10” tire comprises second cutouts 38”, 40” and 42” formed respectively in each second circumferential rib 28”, 30”, 32”. The cutouts 40”, 42” are identical to the cutouts 42 of the tire according to the first embodiment described above. The characteristics of the cutouts 38” are deduced mutatis mutandis from those of the cutouts 40”, 42” by turning over with respect 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

CLAIMS 1. Pair of a first tire (10') and a second tire (10”), the first tire (10”) comprising a first tread (14') comprising cutouts comprising a first cutout (38', 40', 42') formed in a first circumferential rib (28', 30', 32') delimited by first and second circumferential cutouts (20', 22', 24', 26') axially adjacent to the first circumferential rib (28', 30', 32'), the second tire (10”) comprising a second tread (14”) comprising cutouts comprising a second cutout (38”, 40”, 42”) formed in a second circumferential rib (28”, 30”, 32”) delimited by first and second circumferential cutouts (20”, 22”, 24”, 26”) axially adjacent to the second circumferential rib (28”, 30”, 32”),the cutouts made in each first and second circumferential rib open into each of the first and second circumferential cutouts delimiting said first or second circumferential rib (28', 30', 32', 28”, 30”, 32”) in respectively first and second opening zones (Z1, Z2), the azimuth (AZ1) of a point in the first opening zone (Z1) of a cutout made in said first or second circumferential rib (28', 30', 32', 28”, 30”, 32”) is substantially circumferentially aligned with the azimuth (AZ2) of a point in the second opening zone (Z2) of another cutout made in said first or second circumferential rib, each first and second cutout (28', 30', 32', 28”, 30”, 32”) includes first (3821, 3841, 3861, 4021, 4041, 4061), second (3822, 3842, 3862, 4022, 4042, 4062) and third (3823, 3843, 3863, 4023, 4043, 4063) portions, the first portion (3821, 3841, 3861,4021, 4041, 4061) and the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each first and second cutout (382, 384, 386, 402, 404, 406) being joined directly to each other by a first inflection zone (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 first and second cutout (382, 384, 386, 402, 404, 406) being joined directly to each other by a second inflection zone (3825, 3845, 3865, 4025, 4045, 4065), the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each first and second cutout being arranged axially between the first (3821, 3841, 3861, 4021, 4041, 4061) and third (3823, 3843, 3863, 4023, 4043, 4063) portions respectively of each first and second cutout, the average direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion (3821, 3841, 3861, 4021, 4041, 4061) of each first and second cutout being not parallel to the mean direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) respectively of each first and second cutout, the mean direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion (3823, 3843, 3863, 4023, 4043, 4063) of each first and second cutout being not parallel to the mean direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) respectively of each first and second cutout, the first cutout (382, 384, 386) having a length (1382, 1384, 1386) in the axial direction (Y) different from the length (1402, 1404, 1406) in the axial direction (Y) of the second cutout (402, 404, 406), an angle (A382, A384, A386) formed by the mean direction (D3821, D3841, D3861) of the first portion (3821, 3841, 3861) and the mean direction (D3822, D3842, D3862) of the second portion (3822,3842, 3862) of the first cutout (382, 384, 386) is substantially equal to an angle (A402, A404, A406) formed by the mean direction (D4021, D4041, D4061) of the first portion (4021, 4041, 4061) and the mean direction (D4022, D4042, D4062) of the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406), an angle (B382, B384, B386) formed by the mean direction (D3822, D3842, D3862) of the second portion (3822, 3842, 3862) and the mean direction (D3823, D3843, D3863) of the third portion (3823, 3843, 3863) of the first cutout (382, 384, 386) is substantially equal to an angle (B402, B404, B406) formed by the mean direction (D4022, D4042, D4062) of the second portion (4022, 4042, 4062) and the mean direction (D4023, D4043, D4063) of the third portion (4023, 4043, 4063) of the second cutout (402, 404, 406), 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 in a mean direction (D3822, D3842, D3862) not parallel to the mean 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, L3861) of the first portion (3821, 3841, 3861) of the first cutout (382, 384, 386) is different from the length (L4021, L4041, L4061) of the first portion (4021, 4041, 4061) of the second cutout (402, 404, 406) and / or the length (L3823, L3843, L3863) of the, third portion (3823, 3843, 3863) of the first cutout (382, 384, 386) is different from the length (L4023, L4043, L4063) of the third portion (4023, 4043, 4063) of the second cutout (402, 404, 406).

2. A tire (10) comprising a tread (14) comprising a tread comprising cutouts comprising: - a first cutout (38) formed in a first circumferential rib (28) delimited by first and second circumferential cutouts (20, 22) axially adjacent to the first circumferential rib, - a second cutout (40) formed in a second circumferential rib (30) delimited by first and second circumferential cutouts (22, 24) axially adjacent to the second circumferential rib, the cutouts formed in each first and second circumferential rib open into each of the first and second circumferential cutouts delimiting said first or second circumferential rib (28, 30) in respectively first and second opening zones (Z1, Z2), the azimuth (AZ1) of a point of the first opening zone (Z1) of a cutout formed in said first or second circumferential rib (28, 30) is substantially circumferentially aligned with the azimuth (AZ2) of a point of the second opening zone (Z2) of another cutout formed in said first or second circumferential rib, each first and second cutout comprises first (3821, 3841, 3861, 4021, 4041,4061), second (3822, 3842, 3862, 4022, 4042, 4062) and third (3823, 3843, 3863, 4023, 4043, 4063) portions, the first portion (3821, 3841, 3861, 4021, 4041, 4061) and the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each first and second cutout (382, 384, 386, 402, 404, 406) being directly joined to each other by a first inflection zone (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 first and second cutout (382, 384, 386, 402, 404, 406) being joined directly to each other by a second inflection zone (3825, 3845, 3865, 4025, 4045, 4065), the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each first and second cutout being arranged axially between the first (3821, 3841, 3861, 4021, 4041, 4061) and third (3823, 3843, 3863, 4023, 4043,4063) portions respectively of each first and second cutout, the mean direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion (3821, 3841, 3861, 4021, 4041, 4061) of each first and second cutout being non-parallel to the mean direction (D3822, D3842, D3862, D4022, D4042, D4062) of the, second portion (3822, 3842, 3862, 4022, 4042, 4062) respectively of each first and second cutout, the mean direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion (3823, 3843, 3863, 4023, 4043, 4063) of each first and second cutout being non-parallel to the mean direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) respectively of each first and second cutout, the first cutout (382, 384, 386) having a length (1382, 1384, 1386) in the axial direction (Y) different from the length (1402, 1404, 1406) in the axial direction (Y) of the second cutout (402, 404, 406), an angle (A382, A384, A386) formed by the mean direction (D3821, D3841, D3861) of the first portion (3821, 3841, 3861) and the mean direction (D3822, D3842, D3862) of the second portion (3822, 3842, 3862) of the first cutout (382, 384,386) is substantially equal to an angle (A402, A404, A406) formed by the mean direction (D4021, D4041, D4061) of the first portion (4021, 4041, 4061) and the mean direction (D4022, D4042, D4062) of the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406), an angle (B382, B384, B386) formed by the mean direction (D3822, D3842, D3862) of the second portion (3822, 3842, 3862) and the mean direction (D3823, D3843, D3863) of the third portion (3823, 3843, 3863) of the first cutout (382, 384, 386) is substantially equal to an angle (B402, B404, B406) formed by the mean direction (D4022, D4042, D4062) of the second portion (4022, 4042, 4062) and the mean direction (D4023, D4043, D4063) of the third portion (4023, 4043, 4063) of the second cutout (402, 404, 406), 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 in a mean direction (D3822, D3842, D3862) not parallel to the mean 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, L3861) of the first portion (3821, 3841, 3861) of the first cutout (382, 384, 386) is different from the length (L4021, L4041, L4061) of the first portion (4021, 4041, 4061) of the second cutout (402, 404, 406) and / or the length (L3823, L3843, L3863) of the third portion (3823, 3843, 3863) of the first cutout (382, 384, 386) is different, of the length (L4023, L4043, L4063) of the third portion (4023, 4043, 4063) of the second cutout (402, 404, 406).

3. Pair of a first tire (10') and a second tire (10”) according to claim 1 or tire (10) according to claim 2, wherein the first cutout (382, 384, 386) has a length (L381, L382, L383) in the circumferential direction (X) substantially equal to the length (L401, L402, L403) in the circumferential direction (X) of the second cutout (402, 404, 406).

4. Pair of a first tire (10') and a second tire (10”) or tire (10) according to any one of the preceding claims, wherein the second portion (3822, 3842, 3862) of the first cutout (382, 384, 386) extends in a mean direction (D3822, D3842, D3862) not parallel to the mean direction (D4022, D4042, D4062) in which the second portion (4022, 4042, 4062) of the second cutout (402, 404, 406) extends: - the first portion (3821, 3841, 3861) of the first cutout (382, 384, 386) extends in a mean direction not parallel to the mean 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 in a mean direction not parallel to the mean direction in which the third portion (4023, 4043, 4063) of the second cutout extends.

5. Pair of a first tire (10') and a second tire (10”) or tire (10) according to any one of the preceding claims, in which the first cutout (382, 384, 386) has a length (I382, I384, I386) in the axial direction strictly less than the length (I402, I404, I406) in the axial direction of the second cutout (402, 404, 406): - the length (L3821, L3841, L3861) of the first portion of the first cutout (382, 384, 386) is strictly less 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 less than the length (L4023, L4043, L4063) of the third portion of the second cutout (402, 404, 406).

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

7. A tire (10) according to any one of claims 2 to 6, wherein the cutouts (38, 40, 42) comprise a third cutout (42) formed in a third circumferential rib (32) delimited by first and second circumferential cutouts (24, 26) axially adjacent to the third circumferential rib (32), the cutouts formed in the third circumferential rib (32) open into each of the first and second circumferential cutouts delimiting said third circumferential rib (32) in respectively first and second opening zones (Z1, Z2), the azimuth (AZ1) of a point in the first opening zone (Z1) of a cutout formed in said third circumferential rib (32) is substantially circumferentially aligned with the azimuth (AZ2) of a point of the second opening zone (Z2) of another cutout made in said third circumferential rib (32),the third cutout (422, 424, 426) comprises first (4221, 4241, 4261), second (4222, 4242, 4262) and third (4223, 4243, 4263) portions, the first portion (4221, 4241, 4261) and the second portion (4222, 4242, 4262) of the third cutout (422, 424, 426) being joined directly to each other by a first inflection zone (4224, 4244, 4264), the second portion (4222, 4242, 4262) and the third portion (4223, 4243, 4263) of the third cutout (422, 424, 426) being joined directly to each other by a second inflection zone (4225, 4245, 4265), the second portion (4222, 4242, 4262) of the third cutout (422, 424, 426) being arranged axially between the first and third portions (4221, 4241, 4261, 4223, 4243, 4263) of the third cutout (422, 424, 426), the mean direction (D3821, D3841, D3861, D4021, D4041, D4061) of the first portion (3821, 3841, 3861, 4021, 4041,4061) of the third cutout being non-parallel to the mean direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of the third cutout, the mean direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion (3823, 3843, 3863, 4023, 4043, 4063) of the third cutout being non-parallel to the mean direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of the third cut, the third cutout (422, 424, 426) having a length (1421, 1422, 1423) in the axial direction (Y) different from the length (1381, 1382, 1383, 1401, 1402, 1403) in the axial direction (Y) of each first and second cutout, an angle formed by the mean direction (D4221, D4241, D4261) of the first portion (4221, 4241, 4261) and the mean direction (D4222, D4242, D4262) of the second portion (4222, 4242, 4262) of the third cutout (422, 424, 426) is substantially equal to an angle formed by the mean direction (D3821, D3841 , D3861 , D4021 , D4041, D4061) of the first portion (3821 , 3841 , 3861, 4021 , 4041, 4061) and the mean direction (D3822, D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each first and second cutout (382, 384, 386, 402, 404, 406), an angle formed by the mean direction (D4222, D4242, D4262) of the second portion (4222, 4242, 4262) and the mean direction (D4223, D4243, D4263) of the third portion (4223, 4243, 4263) of the third cutout (422, 424, 426) is substantially equal to an angle formed by the mean direction (D3822 D3842, D3862, D4022, D4042, D4062) of the second portion (3822, 3842, 3862, 4022, 4042, 4062) and the mean direction (D3823, D3843, D3863, D4023, D4043, D4063) of the third portion (3823, 3843, 3863, 4023, 4043, 4063) of each first and second cutout (382, 384, 386, 402, 404, 406), the length (L3822, L3842, L3862, L4022, L4042, L4062, L4222, L4242, L4262) of the second portion of the third cutout (422, 424, 426) is substantially equal to the length (L3822, L3842, L3862, L4022, L4042, L4062) of the second portion of each first and second cutout (382, 384, 386, 402, 404, 406), the second portion (4222, 4242, 4262) of the third cutout (422, 424, 426) extends in a mean direction (D4223, D4243, D4263) not parallel to the mean direction in which the second portion (3822, 3842, 3862, 4022, 4042, 4062) of each first and second cutout (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 different from the length (L3821, L3841, L3861, L4021, L4041, L4061, L4221, L4241,L4261) of the first portion of each first and second cutout (382, 384, 386, 402, 404, 406,) and / or the length (L4223, L4243, L4263) of the third portion of the third cutout (422, 424, 426) is different from the length (L4223, L4243, L4263) of the third portion of each first and second cutout (422, 424, 426)., 8. Tire (10) according to the preceding claim, in which the third cutout (422, 424, 426) has a length (L421, L422, L423) in the circumferential direction (X) substantially equal to the length (L381, L382, L383, L401, L402, L403) in the circumferential direction (X) of each first and second cutout.

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

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

11. A tire (10) according to any one of claims 7 to 10, wherein an angle formed (A382, A384, A386, A402, A404, A406, A422, A424, A426) by the mean direction of the first portion and the mean direction of the second portion of the third cutout (422, 424, 426) is substantially equal to an angle (B422, B424, B426) formed by the mean direction of the second portion and the mean direction of the third portion respectively of the third cut (382, 384, 386, 402, 404, 406, 422, 424, 426).

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