Vehicle tires

Abstract

The invention relates to a vehicle tyre with a tread having at least one row of tread blocks with tread blocks (1) which are delimited by transverse grooves (2) and on at least one side - either jointly or individually - by a further groove (3) and have block edges (1a) on the transverse grooves (2), wherein the transverse grooves (2) have a depth profile line (T QR ), wherein the profile blocks (1) include those which are provided with at least three circumferentially successive incisions (4, 5), wherein the incisions (4, 5) include two corresponding edge incisions (5) and a single central incision (4) or several corresponding central incisions (4). At least the edge-side incisions (5) have free-standing base elevations (10, 10'), wherein in each edge-side incision (5) a greater number of free-standing base elevations (10, 10') is provided than in the or each central incision (4).

Description

[0001] The invention relates to a vehicle tyre with a tread having at least one row of tread blocks with tread blocks arranged in succession in the circumferential direction, which are delimited by transverse grooves running parallel to one another and on at least one side - either jointly or individually - by a further groove and have block edges on the transverse grooves, wherein the transverse grooves each have a groove bottom and, viewed in longitudinal section, a depth profile line defined by the deepest points of the groove bottom, wherein the tread blocks include those which are provided with, in particular traversed, at least three incisions which follow one another in the circumferential direction, wherein the incisions open into the further groove or the further groove which is adjacent to the tread block, viewed in plan view and with reference to incision base lines aligned in their direction of extension, run in the same direction as the circumferential direction, in particular parallel, to the block edges and have an incision bottom, a width of 0.40 mm to 2.00 mm and a maximum depth of at least 60% of the tread depth, wherein the incisions include two correspondingly designed edge incisions and a single central incision or several correspondingly designed central incisions, wherein the incision oreach central incision differs from the peripheral incisions in terms of its depth.

[0002] Such a vehicle tire is known, for example, from DE 10 2016 224 365 A1. The vehicle tire has a tread with a row of tread blocks divided into 50 to 60 pitches, with central tread blocks having block edges extending at an angle of 5° to 30° to the axial direction when viewed from above, wherein the central tread blocks are each provided with at least three traversing cuts running parallel to the block edges and having a width of 0.3 mm to 0.8 mm. In the embodiment shown, depending on the pitch, three to five cuts are provided in each central tread block. If three cuts are provided, these include a single central cut and two edge cuts. The central cut has a maximum, in particular constant, depth of 70% to 100% of the tread depth.The edge cuts each have a central cut section with a depth of 70% to 100% of the tread depth and two lateral cut sections with a maximum depth of 60% of the tread depth. These measures are intended to significantly reduce rolling noise at the planned low pitch number of 50 to 60 pitches.

[0003] It is known that in vehicle tires of the type mentioned above, the cuts formed in the profile blocks of the tread are crucial for snow performance. At the same time, these cuts reduce the stiffness of the profile blocks, increasing their flexibility. They deform or bend more severely under load, reducing the contact area of ​​the profile blocks with the ground, thus impairing dry performance, for example, the transmission of force to the ground. In the cut sequence known from DE 10 2016 224 365 A1, which is present within a central profile block, the edge cuts with shallower lateral cut sections compared to the central cuts ensure a certain equalization of the stiffness of the formed block segments, which, however, does not optimally counteract the aforementioned impairment of dry performance.

[0004] The invention is therefore based on the object of resolving the conflict of objectives between snow and dry performance in a vehicle tire of the type mentioned above in a more favorable manner than before.

[0005] The problem is solved according to the invention by a) that at least the edge-side cuttings have free-standing base elevations spaced from the cutting ends and bordered by the cutting base, wherein in each peripheral cut a greater number of free-standing base elevations are provided than in the or each central cut, and / or b) that each cut, viewed in longitudinal section, has a depth line, which, in the case of a cutting without a free-standing base elevation, is defined by the base of the cutting and, in the case of a cutting with a free-standing base elevation(s), by the deepest base sections of the cutting base lying in the area outside the free-standing base elevation(s), wherein the depth lines of the incisions run parallel to the depth line of the transverse grooves in the direction of the tread periphery and are each spaced apart from the latter, wherein the distance of the depth line of each edge incision is greater than the distance of the depth line of the or each central incision.

[0006] These measures, implemented independently or in combination, ensure that the edge block segments located between the edge cuts and the transverse grooves and the center block segments located between the cuts exhibit particularly similar deformation behavior during tire rolling, especially under braking and traction loads. As a result, the outer surfaces of the deformed block segments exhibit a similar angled orientation relative to the ground. When driving on snow, all block and cut edges of a tread block penetrate the snow with similar "pressure angles." These edges are thus particularly effective overall, and the tire's snow performance is improved.At the same time, the matched deformation behavior of the block segments increases the contact area of ​​the tread blocks with the ground and evens out the force transmission of the block segments to the ground, so that dry performance is maintained at a higher level than before.

[0007] According to a preferred embodiment, the distance between the depth profile line of each edge incision is 0.50 mm to 2.00 mm, in particular 0.70 mm to 1.70 mm, preferably 0.80 mm to 1.20 mm, greater than the distance between the depth profile line of the or each central incision. This contributes to a particularly advantageous mutual adjustment of the deformation behavior of the block segments.

[0008] According to a further preferred embodiment, the distance of the depth profile line of the or each central incision is 0.30 mm to 1.20 mm, in particular up to 1.00 mm, preferably up to 0.80 mm.

[0009] A further preferred embodiment provides that the or each central incision has at least one, preferably exactly one or exactly two, freestanding base elevation(s). The provision of at least one base elevation is beneficial for dry performance. With exactly one or exactly two base elevation(s), the incisions retain their folding behavior, which is particularly beneficial for snow performance.

[0010] In this respect, it is also advantageous if each edge incision has exactly one or exactly two free-standing base elevations more than the central incision.

[0011] In the last-mentioned preferred embodiment, it is advantageous if the free-standing base elevations have a distance from the tread periphery in the radial direction that is determined as the smallest possible distance, wherein the distance between the free-standing base elevation(s) in or in each central cut is 2.00 mm to 4.00 mm and the distance between the free-standing base elevation(s) in each edge cut is 1.00 mm to 3.00 mm, wherein the distance between the free-standing base elevation(s) in or in each central cut is at least 0.50 mm, preferably 1.00 mm to 1.50 mm, greater than the distance between the free-standing base elevation(s) in each edge cut. Therefore, the distances between the base elevations within the central cuts and the distances between the base elevations within the edge cuts each match. The differing distances between the base elevations in the orthe central incision(s) and the edge incisions contribute to a particularly advantageous solution to the aforementioned conflict of objectives.

[0012] According to a further advantageous embodiment, the freestanding base elevations are each delimited in the radial direction by a cut base section of the cut base running parallel to the tread periphery. The cut base section, viewed in longitudinal section through the cut, has a width of 1.5 mm to 3.0 mm, in particular up to 2.5 mm, measured parallel to the tread periphery. Such base elevations are particularly advantageous for the desired mutual stiffening of the block segments and contribute to good dry performance.

[0013] In the latter embodiment, according to a preferred further development, each freestanding base elevation, viewed in longitudinal section through the incision, is laterally delimited by two elongated, S-shaped, curved incision base sections, each with a straight, central subsection. The subsections form an angle of 8° to 12° with each other and converge toward the tread periphery. This contributes to a further improvement in the mutual stiffening of the block segments.

[0014] It is furthermore advantageous if the or each central incision and the edge incisions, each viewed in longitudinal section, has or have an edge-side base elevation adjacent to each incision end, wherein the edge-side base elevation(s) which additionally border(s) the further groove(s) has or have a distance to the tread periphery in the radial direction determined as the smallest possible distance, wherein the distance of these edge-side base elevation(s) in or in each central incision is 2.00 mm to 4.00 mm and the distance of these edge-side base elevation(s) in each edge incision is 1.00 mm to 3.00 mm, wherein the distance of the edge-side base elevation(s) in or in each central incision is at least 0.50 mm, preferably 1.00 mm to 1.50 mm, greater than the distance of the edge-side Base elevation(s) in each marginal incision.This contributes to a further mutual adaptation of the deformation behavior of the block segments as the tire rolls.

[0015] Further features, advantages and details of the invention will now be described in more detail with reference to the drawing, which schematically shows an embodiment of the invention. Fig. 1 a plan view of a simplified shoulder-side profile block of a tread of a vehicle tire developed in the plane with an embodiment of the invention, Fig. 2a a front view of a visualization (a drawing body) of a cut in the tread curved according to the outer contour of the tire, Fig. 2b one to Fig. 2a analogous front view of the cut in the tread unwound in the plane, Fig. 3a a front view of a visualization (a drawing body) of a further cut in the tread curved according to the outer contour of the tire and Fig. 3b one to Fig. 3a analogous front view of the further incision in the tread unwound into the plane.

[0016] Vehicle tires designed according to the invention are tires for motor vehicles, in particular for multi-track motor vehicles, preferably for passenger cars (PCs), vans (transporters) or SUVs, and preferably pneumatic vehicle tires, particularly preferably pneumatic vehicle tires of radial design for rims with an integer rim diameter of 13 inches to 24 inches, in particular of 16 inches to 23 inches, wherein the tires are intended for driving under winter driving conditions.

[0017] Fig. Figure 1 shows a plan view of an axially elongated, parallelogram-shaped, shoulder-side tread block 1 of a tread of a pneumatic vehicle tire. The circumferential direction of the pneumatic vehicle tire is indicated by a double arrow U, and one lateral edge of the tread's ground contact patch is indicated by a line L. The ground contact patch corresponds to the statically determined footprint (determined with a tire mounted on a standard rim, loaded at 70% of the maximum load capacity, internal pressure at 85% of the standard pressure, according to ETRTO standards).

[0018] The shoulder-side profile block 1 is formed in both circumferential directions by a Fig. 1 transverse groove 2 shown in some areas and delimited on the inside of the tread by a groove 3, wherein the shoulder-side profile block 1 is part of a shoulder-side profile block row of shoulder-side profile blocks 1 arranged successively around the tire circumference and separated from one another by transverse grooves 2. The other areas of the tread profile can be designed in a manner known per se.

[0019] The transverse grooves 2 run, viewed in plan view, continuously curved, parallel to each other, each having a groove center line m following the groove course in the middle QR on, run - relative to the groove center line m QR - to the axial direction at an angle α of 0° to 35°, in particular of 5° to 25°, wherein the angle α decreases continuously in the direction of the tread outer side over the extent of the transverse grooves 2 and in each case at an angle m which is locally adjacent to the groove centre line QREach transverse groove 2 has a groove base 2a (shown in Fig. 2b and Fig. 3b), on the tread periphery a perpendicular to the groove center line m QR , i.e. a perpendicular to a point on the groove center line m QR applied tangent, determined width of in particular 3.0 mm to 10.0 mm, preferably 5.0 mm to 9.0 mm, and in the radial direction a maximum depth t QR (indicated in Fig. 2b, depth at the deepest point) from 70% to 100% of the respective intended tread depth T P ( Fig. 2b), which is usually 6.5 mm to 13.0 mm, with the transverse grooves 2 becoming shallower towards the outside of the tread in a known manner ( Fig. 2b, Fig. 3b). The groove base 2a of the transverse groove 2 defines or forms a depth line T lying at the respective locally deepest point of the transverse groove 2 QR ( Fig. 2b, Fig. 3b) the transverse groove 2.

[0020] The shoulder-side tread block 1 has, at each transverse groove 2, a continuously curved block edge 1a in plan view, at the groove 3, a straight lateral block edge 1b in plan view, an outer block surface 1c delimited by the block edges 1a, 1b and located in the tread periphery, at each adjacent transverse groove 2, a block flank 1d adjoining the respective block edge 1a, and a lateral block flank 1e located at the groove 3 and adjoining the lateral block edge 1b. The block edges 1a run parallel to one another when viewed in plan view. The shoulder-side tread block 1 further has a maximum block width b determined perpendicular to and between the block edges 1a, in particular a constant maximum block width b. B (width at the widest point), with the maximum block width b Bbetween two tangents (not shown) attached to the block edges 1a and running parallel to each other.

[0021] The shoulder-side profile block 1 is provided with three over its maximum block width b Bin particular evenly or essentially evenly distributed incisions 4, 5, starting from the block outer surface 1c and, in plan view with respect to the circumferential direction, inclined in the same direction to the block edges 1a - namely two edge incisions 5 and a central incision 4 lying between them -, wherein the incisions 4, 5 traverse the shoulder-side tread block 1 at least within the ground contact area, therefore open into the groove 3 via the lateral block flank 1e and give the shoulder-side tread block 1 two edge-side block segments 1f, each located between a transverse groove 2 and the respective nearest edge-side incision 5, and two central block segments 1g, each located between two central incisions 4.

[0022] In plan view, the incisions 4, 5 each have a cutting base line b following their direction of extension and lying at the level of the block outer surface 1c, free of turning points L which ends on the inside of the tread at the lateral block edge 1b.

[0023] The incisions 4, 5 run - viewed in plan view and related to their incision base lines b L - parallel to each other and, also viewed from above, are arranged along the incision base lines b Leach consisting of a continuously curved and parallel to the block edges 1a extending central incision section 4a (incision 4), 5a (incision 5), a tangentially (kink-free) adjoining said incision section, to the groove 3 and straight, inside incision section 4b (incision 4), 5b (incision 5) and a tangentially adjoining the central incision section 4a, 5a, shoulder-side incision section 4c, 5c, wherein the central incision sections 4a, 5a, relative to the incision base lines b L , each running parallel to the block edges 1a.

[0024] The edge block segments 1f and the central block segments 1g each have a level determined at the level of the block outer surface 1c, which is aligned with the incision base line(s) b L related, in particular constant, maximum segment width b BS(width at the widest point), whereby the mentioned uniform or essentially uniform distribution of the cuts 4, 5 over the maximum block width b B such that the segment widths b BS of the block segments 1f, 1g or vary within an interval of 0.5 mm, in particular 0.2 mm. Particularly preferably, the number of incisions 4, 5 is adapted to the maximum block width b B adjusted so that the maximum segment width b BS 4.0 mm to 7.0 mm each. For the edge-side block segments 1f, the maximum segment width b BS on the respective block edge 1a.

[0025] According to Fig. 2b and Fig. 3b, the incisions 4, 5 are each delimited by an incision base 6 and two incision walls 7 aligned parallel to each other and in the radial direction (one incision wall 7 is visible in each case). The incisions 4, 5 each have a L determined extension length c E ( Fig. 1), in radial direction a maximum depth t E4 (Incision 4, depth at the deepest point, Fig. 2b), t E5 (Incision 5, depth at the deepest point, Fig. 3b) of at least 60%, in particular of at least 70%, of the tread depth T P , a constant width b determined as the smallest possible distance between the cut walls 7 E ( Fig. 1) from 0.40 mm to 2.00 mm, in particular from 0.60 mm to 1.40 mm, as well as a central cutting surface M which is spaced at the same distance from the cutting walls 7 and which, in plan view, follows the cutting path E on ( Fig. 1: The incision center area M E falls in the embodiment in plan view with the incision base line b L together). The maximum depth t E4 ( Fig. 2b) of the central incision 4 differs in the embodiment from the maximum depth t E5 ( Fig. 3b) the marginal incisions 5, as will be explained in more detail.

[0026] In each inner cut section 4b (cut 4), 5b (cut 5) there is a connecting piece connected to both cut walls 7 and extending up to the groove 3 ( Fig. 1) and therefore adjacent to the respective incision end, protruding slightly into the central incision section 4a (incision 4), 5a (incision 5), and co-limited by the incision base 6, edge-side base elevation 8 (incision section 4b), 8' (incision section 5b). In each shoulder-side incision section 4c, 5c, a respective edge-side base elevation 9 is formed, connected to both incision walls 7, protruding slightly into the central incision section 4a (incision 4), 5a (incision 5), and co-limited by the incision base 6.

[0027] The edge-side base elevation 8, 8', 9 has, along the central area of ​​the incision M Eviewed in a longitudinal section, has an asymmetrical trapezoidal shape, is delimited in the radial direction by a cut base section 6a (base elevation 8, 8'), 6b (base elevation 9) running parallel to the block outer surface 1c and forming the shorter base side of the trapezoid, and on the inside of the cut by a cut base section 6c (base elevation 8, 8'), 6d (base elevation 9) forming a trapezoidal leg and extending in an elongated S-shaped curve. The cut base section 6c, 6d is composed of a straight central sub-section 6c1, 6d1 and two end sub-sections 6c2, 6d2, each of which is curved along a radius.

[0028] The edge-side base elevation 8, 8' has a width b measured parallel to the tread periphery at the level of the cut base section 6a G1from 3.0 mm to 6.0 mm, whereby the incision base section 6a, which also limits the edge-side base elevation 8, has a distance a1 ( Fig. 2b) from 2.00 mm to 4.00 mm and the incision base section 6a, which also limits the edge-side base elevation 8', has a distance a1' ( Fig. 3b) from 1.00 mm to 3.00 mm, wherein the distance a1 is at least 0.50 mm, preferably 1.00 mm to 1.50 mm, greater than the distance a1'.

[0029] The edge-side base elevation 9 has a width b measured parallel to the tread periphery at the level of the cut base section 6b G2 from 3.50 mm to 6.50 mm, wherein the incision base section 6b has a distance a2 of 0.30 mm to 1.00 mm from the level of the block outer surface 1c in the radial direction.

[0030] The central incision section 4a, 5a has a along the incision base line b L ( Fig. 1) determined length c a ( Fig. 2b, Fig. 3b) and is composed of two section halves 4a', 5a', which are joined at a radially extending central incision section 4a, 5b with respect to its length c a bisecting axis A1.

[0031] In the central incision section 4a ( Fig. 2b) a single free-standing base elevation 10 is formed, which is connected to both cutting walls 7 and bounded by the cutting base 6, and which is essentially bisected by the axis A1 and is therefore partially located in each section half 4a'. In the central cutting section 5a ( Fig. 3b) two free-standing base elevations 10' are formed, which are connected to both cutting walls 7 and bounded by the cutting base 6, whereby one base elevation 10' is located entirely in one section half 5a' and the other base elevation 10' is located entirely in the other section half 5a'.

[0032] The or each free-standing base elevation 10, 10' has, along the cutting center area M Eviewed in a longitudinal section, neglecting the depth of the cut 4, 5 which decreases towards the outside of the tread, it has a symmetrical trapezoidal shape with a trapezoidal base lying at the cut base 6, is delimited in the radial direction by a cut base section 6e which runs parallel to the outer surface 1c of the block and forms the shorter base side of the trapezoid, and laterally by two elongated, S-shaped curved cut base sections 6f which form the legs of the trapezoid. The cut base sections 6f are each composed of a straight, central sub-section 6f1 and two end-side sub-sections 6f2, each of which is curved along a radius. The central sub-sections 6f1 form an angle β of 8° to 12° with one another and are inclined to the radial direction in such a way that they approach one another in the direction of the tread periphery.

[0033] The freestanding base elevation 10, 10' has, along the cutting center surface M E viewed in a longitudinal section, at the level of the cut base section 6e a width b measured parallel to the tread periphery G3 of 1.5 mm to 3.0 mm, in particular of up to 2.5 mm, wherein the incision base section 6e which also delimits the free-standing base elevation 10, 10' - corresponding to the incision base section 6a on the base elevation 8, 8' - has the distance a1 (base elevation 10), a1' (base elevation 10') to the level of the block outer surface 1c in the radial direction.

[0034] When determining the mentioned widths b G1 , b G2 , b G3of the base elevations 8, 8', 9, 10, 10', the radially outer end-side subsections 6c2, 6d2, 6f2, which are immediately adjacent to the incision base section 6a, 6b, 6e running parallel to the tread periphery, are disregarded in such a way that the widths b G1 , b G2 , b G3 refer to a fictitious intersection point of the middle subsections 6c1, 6d1, 6f1 with the incision base sections 6a, 6b, 6e running parallel to the tread periphery.

[0035] In the area outside the base elevations 8, 8', 9, 10, 10', the deepest base sections 6g remain from the cut base 6, which run between the radially inner ends of the two respective elongated, S-shaped curved cut base sections 6c, 6d, 6f. The deepest base sections 6g run along the cut center surface M. Eviewed in a longitudinal section, are aligned with each other and define or form a depth line T E4 (Incision 4, indicated by dashed lines), T E5 (Incision 5, indicated by dashed lines) of incision 4, 5. The depth lines T E4 , T E5 the incisions 4, 5 and the depth lines T QR of the adjacent transverse grooves 2 - viewed in a radially extending surface into which the depth lines T E4 , T E5 , T QR are projected in the circumferential direction - parallel to each other, with the depth lines T E4 , T E5 of the incisions 4, 5 opposite the depth line T QR each nearest transverse groove 2 are offset parallel towards the tread periphery in such a way that the depth profile line T E4 to the depth line T QR a distance a4 determined as the smallest possible distance ( Fig. 2b) and the depth line T E5 to the depth line T QR a distance a5 determined as the smallest possible distance ( Fig. 3b), wherein the distance a5 is greater than the distance a4. The distance a4 is 0.30 mm to 1.20 mm, in particular up to 1.00 mm, preferably up to 0.80 mm. The distance a5 is 0.50 mm to 2.00 mm, in particular 0.70 mm to 1.70 mm, preferably 0.80 mm to 1.20 mm, greater than the distance a4. Consequently, the maximum depth t E5 ( Fig. 3b) the edge incisions 5 are each less than the maximum depth t by the difference between the distance a4 and the distance a5 E4 the central incision 4.

[0036] The invention is not limited to the described embodiment.

[0037] The sipes can also be provided in the tread blocks of a central row of tread blocks. Furthermore, the sipes can be straight or continuously curved in a horizontal plane, and can also be undulated at least in sections. The sipe base line, viewed in a horizontal plane, runs in the direction of extension (main extension) of the sipes and is therefore either straight or continuously curved (arched, circular arc-shaped) and, with respect to the circumferential direction, inclined in the same direction as the block edges adjacent to the transverse grooves.

[0038] According to a first embodiment, at least one freestanding base elevation is provided in each edge incision, with the number of freestanding base elevations in each edge incision being greater than in the central incision(s). The central incision(s) may be free of base elevations.

[0039] According to a second embodiment, which is provided either as an alternative to the first embodiment or together with the first embodiment, the incisions, viewed in longitudinal section, have a depth profile line that is offset parallel to the depth profile line of the transverse grooves in the manner explained. In an incision without a freestanding base elevation, the depth profile line is defined by the base of the incision. List of reference symbols 1 shoulder-side profile block 1a block edge 1b side block edge 1c Block outer surface 1d block flank 1st side block flank 1f edge block segment 1g central block segment 2 transverse grooves 2a groove base 3 grooves 4 central incision 4a central incision section 4a' section half 4b inside incision section 4c shoulder-side incision section 5 marginal incision 5a central incision section 5a' section half 5b inside incision section 5c shoulder-side incision section 6 Incision reason 6a basic section of the cutting 6b Cutting base section 6c cutting base section 6c1 middle subsection 6c2 end subsection 6d cutting base section 6d1 middle subsection 6d2 end subsection 6e cutting base section 6f cutting base section 6f1 middle subsection 6f2 end subsection 6g deepest bottom section 7 cutting wall 8, 8' edge-side base elevation 9 edge-side base elevation 10, 10' freestanding base elevation a1, a1', a2, a4, a5 spacing A1 axis b B maximum block width b BS maximum segment width b E , b G1 , b G2 , b G3 Width b L Incision baseline c a length c E Extension length M E Incision center area m QR Groove centerline t E4 , t E5 maximum depth T E4 , T E5 Depth line T P Tread depth t QR maximum depth T QR Depth line U Double arrow (circumferential direction) L line (lateral edge of the ground contact area) α, β angle QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2016 224 365 A1 [0002, 0003]

Claims

[1] Vehicle tyres with a tread having at least one row of tread blocks with circumferentially successive tread blocks (1) which are delimited by transverse grooves (2) running parallel to one another and on at least one side - either jointly or individually - by a further groove (3) and have block edges (1a) on the transverse grooves (2), wherein the transverse grooves (2) each correspond to a groove base (2a) and, viewed in longitudinal section, to a depth line (T QR ), wherein the profile blocks (1) include those which are provided with, in particular traversed by, at least three incisions (4, 5) which follow one another in the circumferential direction, wherein the incisions (4, 5) open into the further groove (3) or the further groove (3) which is adjacent to the profile block (1), viewed in plan view and relative to incision base lines (bL ), inclined in the same direction with respect to the circumferential direction, in particular parallel, to the block edges (1a) and having a notch base (6), a width (b E ) from 0.40 mm to 2.00 mm and a maximum depth (t E4 , t E5 ) of at least 60% of the tread depth (T P ), wherein the incisions (4, 5) include two matching edge incisions (5) and a single central incision (4) or several matching central incisions (4), wherein the or each central incision (4) differs from the edge incisions (5) with regard to its depth profile, characterized by , a) that at least the edge-side incisions (5) have free-standing base elevations (10, 10') spaced from the incision ends and delimited by the incision base (6), wherein in each edge-side incision (5) a larger number of free-standing base elevations (10, 10') are provided than in the or each central incision (4), and / or b) that each incision (4, 5), viewed in longitudinal section, has a depth line (T E4 , T E5 ), which, in the case of a cutting without a free-standing base elevation, is defined by the cutting base (6) and, in the case of a cutting (4, 5) with a free-standing base elevation(s) (10), by the deepest base sections (6g) of the cutting base (6g) lying in the area outside the free-standing base elevation(s) (10), where the depth lines (T E4 , T E5 ) of the incisions (4, 5) in the direction of the tread periphery parallel to the depth line (T QR ) of the transverse grooves (2) and are each at a distance (a4, a5) from these, wherein the distance (a5) of the depth profile line (T E5) of each edge-side incision (5) is greater than the distance (a4) of the depth line (T E4 ) of the or each central incision (4). [2] Vehicle tyre according to claim 1, characterized by that the distance (a5) of the depth line (T E5 ) of each edge-side incision (5) is 0.50 mm to 2.00 mm, in particular 0.70 mm to 1.70 mm, preferably 0.80 mm to 1.20 mm, greater than the distance (a4) of the depth profile line (T E4 ) of the or each central incision (4). [3] Vehicle tyre according to claim 1 or 2, characterized by that the distance (a4) of the depth line (T E4 ) of the or each central incision (4) is 0.30 mm to 1.20 mm, in particular up to 1.00 mm, preferably up to 0.80 mm. [4] Vehicle tyre according to one of claims 1 to 3, characterized by that the or each central incision (4) has at least one, preferably exactly one or exactly two, free-standing base elevation(s) (10). [5] Vehicle tyre according to one of claims 1 to 4, characterized by that each edge incision (5) has exactly one or exactly two free-standing base elevation(s) (10') more than the or each central incision (4). [6] Vehicle tyre according to claim 4 or 5, characterized by in that the free-standing base elevations (10, 10') have a distance (a1, a1') from the tread periphery in the radial direction, which distance is determined as the smallest possible distance, the distance (a1) of the free-standing base elevation(s) (10) in or in each central cut (4) being 2.00 mm to 4.00 mm and the distance (a1') of the free-standing base elevation(s) (10') in each edge cut (5) being 1.00 mm to 3.00 mm, the distance (a1) of the free-standing base elevation(s) (10) in or in each central cut (4) being at least 0.50 mm, preferably 1.00 mm to 1.50 mm, greater than the distance (a1') of the free-standing base elevation(s) (10') in each edge cut (5). [7] Vehicle tyre according to one of claims 1 to 6, characterized by that the free-standing base elevations (10, 10') are each delimited in the radial direction by a cut base section (6e) of the cut base (6) running parallel to the tread periphery, wherein the cut base section (6e), viewed in longitudinal section through the cut (4, 5), has a width (b G3 ) of 1.5 mm to 3.0 mm, in particular up to 2.5 mm. [8] Vehicle tyre according to claim 7, characterized bythat each free-standing base elevation (10, 10'), viewed in longitudinal section through the incision (4, 5), is laterally delimited by two elongated, S-shaped curved incision base sections (6f) each with a straight, central sub-section (6f'), wherein the sub-sections (6f') enclose an angle (β) of 8° to 12° with one another and approach one another in the direction of the tread periphery. [9] Vehicle tyre according to one of claims 1 to 8, characterized bythat the or each central incision (4) and the edge incisions (5), each viewed in longitudinal section, has or have an edge-side base elevation (8, 8', 9, 9') adjacent to each incision end, wherein the edge-side base elevation(s) (8, 8') which additionally border(s) the further groove(s) (3) has or have a distance (a1, a1') to the tread periphery in the radial direction determined as the smallest possible distance, wherein the distance (a1) of these edge-side base elevation(s) (8) in or in each central incision (4) is 2.00 mm to 4.00 mm and the distance (a1') of these edge-side base elevation(s) (8') in each edge incision (5) is 1.00 mm to 3.00 mm, wherein the distance (a1) the edge-side base elevation(s) (8) in orin each central incision (4) is at least 0.50 mm, preferably 1.00 mm to 1.50 mm, greater than the distance (a1') of the edge-side base elevation(s) (8') in each edge-side incision (5).

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