Vehicle tires

Abstract

The invention relates to a vehicle tire (2) with a tread (1), wherein the tread (1) has at least one circumferentially extending row of profile blocks, wherein the at least one row of profile blocks is subdivided into several profile blocks (4a) by transverse grooves (7), wherein the transverse grooves (7) each extend at an angle to a transverse direction in an longitudinal direction, wherein a projection (11) consisting of at least two projection parts (11a, 11b, 11c) is arranged in the respective transverse groove (7), wherein a groove depth of a groove base (9c) of the respective transverse groove (7) is reduced in the area of ​​the projection (11) compared to a base depth of the respective transverse groove (7). According to the invention, the elevation (11) is cut in the extension direction of the respective transverse groove (7), so that a lamella (13) with a lamella base at a lamella base depth is formed, wherein the lamella (13) extends in the extension direction over all elevation parts (11a, 11b, 11c) of the elevation (11).

Description

[0001] The invention relates to a vehicle tire according to the preamble of claim 1.

[0002] Vehicle tires, especially pneumatic tires, conventionally have circumferentially extending rows of tread blocks separated from each other by several circumferentially extending grooves (central circumferential grooves, shoulder-side circumferential grooves). V-shaped or angled transverse grooves, for example, open into the circumferential grooves, which further subdivide the rows of tread blocks into individual tread blocks. This creates a specific tire pattern.

[0003] For a good snow performance of a tire tread, two properties are particularly important: firstly, snow-snow friction, i.e. friction between the snow held in the tire tread and the layer of snow on the road, and secondly, the friction obtained by a leading edge of a tread block (leading block edge of a tread block), whereby the leading edge turns into the tire contact patch during operation of the vehicle tire.

[0004] For both properties, it's beneficial if the transverse grooves, in particular, open wide when turning into the tire contact patch. This allows the incoming block edge to offer better cutting performance thanks to a larger clearance angle. Furthermore, a wide-open transverse groove allows more snow to be collected in the respective transverse groove, improving snow-on-snow friction.

[0005] DE 10 2019 217 439 A1 describes the arrangement of base elevations (elevations, "tie-bar") of varying depth or height in the transverse grooves, by means of which the groove depth of the transverse grooves is locally reduced. In the individual base elevation sections, two grooves separated from each other by a web are formed on a cover surface parallel to each other and arranged at a corresponding distance from the groove flanks of the respective transverse groove. The grooves serve as additional snow pockets and provide additional grip edges. When driving on snow or slush, snow can be pressed into the grooves and compacted, thereby achieving improved traction properties. Additional depressions extending in the circumferential direction and adjacent to the base elevation sections form additional snow pockets to improve the effect of snow-on-snow friction.

[0006] The disadvantage is that the transverse grooves are only superficially formed in the respective base raised section. The respective base raised section, which connects the two center or shoulder tread blocks adjacent to the transverse groove in the circumferential direction, even beyond the groove bottom, enables increased tread rigidity, for example, for dry braking, but also prevents the respective transverse groove from opening widely. This reduces the clearance angle of the incoming tread block edge and results in poorer cutting performance. In addition, the smaller opening of the transverse groove means less snow can be accommodated in the transverse groove, resulting in a deterioration in the snow-on-snow friction effect.

[0007] US 11,161,375 B2 proposes a connecting bar with a sipe-like cut, which is located only in the central region of the transverse grooves that lead into one of the central circumferential grooves. In the transverse grooves that lead into one of the shoulder-side circumferential grooves, the connecting bar with the sipe-like cut can also be located in an end region of the respective transverse groove adjacent to the shoulder-side circumferential groove. The sipe-like cut connecting bars in the transverse grooves, in conjunction with other specially arranged sipe-like cuts in the tread blocks, maintain a good balance between steering stability on dry roads and, at the same time, handling on snow and ice.

[0008] DE 10 2015 214 483 A1 describes a vehicle tire with a shoulder-side tread block row defined on the inside of the tread by a shoulder-side circumferential groove. Transverse grooves extending essentially parallel to one another open into the shoulder-side circumferential groove, with each of these transverse grooves defined by a groove base and two groove flanks. Each of these transverse grooves has at least two adjacent groove sections of different depths within the ground contact area, with the depth of the groove sections gradually increasing toward the tread edge. This is intended to reduce air pumping noises that occur in the shoulder-side areas of the tread due to air being forced through the transverse grooves.

[0009] The reduction of air pump noise is achieved in EP 2 660 078 B1 by providing tie bars with lamellar fine cuts or incisions in the transverse grooves that lead into the shoulder-side circumferential grooves. This allows the transverse groove to open in front of the shoulder-side circumferential grooves, allowing the air in the transverse grooves to escape. Furthermore, the part of the transverse grooves that leads into the central circumferential groove is narrowed, so that no snow retention is formed between the tread blocks via snow pockets or the like. Therefore, this vehicle tire does not improve snow-to-snow friction.

[0010] DE 10 2005 013 810 A1 describes a vehicle tire having a connecting web in each of the transverse grooves that open into shoulder-side circumferential grooves, said connecting web connecting or binding adjacent shoulder-side tread blocks of the vehicle tire in the circumferential direction via the respective transverse groove. A sipe with a zigzag section is formed in the connecting web, extending in the groove center direction of the respective transverse groove. The sipe is three-dimensional, with sipe wall surfaces repeatedly having three-dimensional recesses and protrusions. Because the recessed sections and protrusions can engage with each other, a high resistance force can be achieved in the shoulder region of the tread not only against the force in the circumferential direction, but also against the lateral force.This makes it possible to efficiently suppress the movement of the connecting web, especially the movement in the lateral direction, which can minimize the generation of deformations at the cut bottom in the highly stressed shoulder area and prevent the occurrence of cracks from the cut bottom.

[0011] The object of the invention is to provide a vehicle tire with which good snow performance and, at the same time, high profile stiffness for operation on a dry road surface can be provided in a simple manner.

[0012] This problem is solved by a vehicle tire according to the independent claim. The subclaims specify preferred developments.

[0013] Accordingly, a vehicle tire with a tread is provided, wherein the tread has at least one row of tread blocks extending in the circumferential direction, wherein the at least one row of tread blocks is divided into a plurality of tread blocks by transverse grooves, wherein the transverse grooves each extend at an angle to a transverse direction in an extension direction. A protrusion comprising at least two protrusion parts is arranged in the respective transverse groove, wherein the protrusion parts adjoin one another in the extension direction of the transverse groove.A groove depth of a groove base of the respective transverse groove is reduced in the region of the elevation at least in some areas compared to a base depth of the respective transverse groove, wherein the elevation is cut in the direction of extension of the respective transverse groove, so that a lamella with a lamella base is formed on a lamella base depth, wherein the lamella extends in the direction of extension over all elevation parts of the elevation.

[0014] Advantageously, the raised portion creates a multi-step groove depth, whereby the raised portion does not connect the two circumferentially adjacent tread blocks to each other as in the prior art. Rather, the sipe allows the respective transverse groove to open widely despite the raised portion incorporated within it, allowing a leading edge or leading block edge of the tread block adjacent to the respective transverse groove in the circumferential direction to turn more deeply. This improves the milling behavior.

[0015] At the same time, the wide opening of each transverse groove allows more snow to be trapped in that groove, which can then be optimally held in the groove by the multi-stepped groove base and optionally by additional recesses. Thus, snow-to-snow friction can be improved with good snow clearing performance.

[0016] At the same time, high tread stiffness for dry braking can be achieved even without the direct connection of adjacent tread blocks via the raised portion, since both tread blocks can continue to support each other via the raised portion divided by the sipe. This is particularly improved by a sipe width of between 0.5 mm and 2 mm, preferably between 0.6 mm and 0.8 mm. During tire operation, the tread blocks can thus support each other via the raised portion even with very slight deformation.

[0017] This is particularly advantageous when the tread block row is a middle tread block row and the transverse grooves are middle transverse grooves, wherein the tread has at least one central circumferential groove and shoulder-side circumferential grooves, wherein the shoulder-side circumferential grooves extend in the transverse direction on both sides offset or spaced from the at least one central circumferential groove in the circumferential direction, wherein the at least one central circumferential groove extends in the circumferential direction adjacent to an equatorial plane of the vehicle tire, preferably along the equatorial plane. The middle tread block row running in the circumferential direction is arranged between the central circumferential groove and the respective shoulder-side circumferential groove, wherein the respective middle tread block row is divided into middle tread blocks by the middle transverse grooves.The middle transverse grooves each run at an angle to the transverse direction in the direction of extension and each open with a central end into the respective central circumferential groove and with a shoulder-side end into the respective shoulder-side circumferential groove. The middle transverse grooves preferably each run at an angle of between 30° and 55° to the transverse direction and preferably also parallel to one another. In this design, the cut-in elevation from the multiple elevation parts with the slat is arranged in a central end region of the middle transverse groove, wherein the central end region directly adjoins the central end of the middle transverse groove or encompasses it. At this point, the design of the tie bars or the elevations with a slat is particularly effective.

[0018] Preferably, the sipe base extends at a constant sipe base depth across all raised portions. This ensures uniform opening of the transverse groove and uniform support of adjacent tread blocks, simplifying production.

[0019] Preferably, the sipe base depth of the sipe base corresponds to at least 80% of the base depth, preferably at least 90% of the base depth, in particular being identical to the base depth, wherein the base depth corresponds to between 60% and 100%, preferably between 70% and 80%, of a full tread depth. The sipe thus extends very deeply into the respective elevation and, in particular, also transitions seamlessly into the groove base next to the elevation, thereby avoiding tension and ensuring a wide opening of the respective transverse groove.

[0020] Preferably, the slat also divides the elevation in the middle. This ensures high strength and stability, ease of manufacture, and (in the circumferential direction) good snow retention on both sides of the slat above the elevation or above its top surfaces.

[0021] Preferably, it is further provided that groove-like depressions extending circumferentially between the individual elevation parts of the elevation are formed in the direction of extension. These serve as additional snow pockets and can additionally hold the trapped snow in the respective transverse groove.

[0022] Preferably, the elevation comprises, in the direction of extension of the respective transverse groove, at least one elevation portion on the inside of the tread, a central elevation portion, and an elevation portion on the outside of the tread. Accordingly, at least one subdivision into three elevation portions or elevation regions is provided, so that at least three levels of variation in the groove depth are provided to optimally retain the snow in the central transverse groove.

[0023] This preferably leads to - a groove depth on the inside of the tread is created above the raised part on the inside of the tread, - a medium groove depth is obtained over the central elevation part, and - a groove depth on the outside of the tread is created above the raised part on the outside of the tread, whereby the groove depth on the inside of the tread, the mean groove depth and the groove depth on the outside of the tread are each less than the base depth of the respective transverse groove, and where the mean groove depth is less than the inside groove depth and the outside groove depth.

[0024] The elevation therefore creates a descending flank and a rising flank on both sides of the central elevation section, whereby the trapped snow can be optimally held in the respective transverse groove. In addition, it can be provided that the groove depth on the inside of the tread and the groove depth on the outside of the tread are identical, so that a symmetrical course is created on both sides.

[0025] Preferably, the sipe is further delimited in the circumferential direction by mutually parallel sipe sidewalls, which extend in the direction of extension of the respective transverse groove over all elevation parts. The sipe sidewalls are non-planar and are formed with three-dimensional recesses and protrusions, e.g., by a bulge, or preferably also with repeated three-dimensional recesses and protrusions, e.g., in a wave-like or zigzag pattern. This allows for efficient absorption of transverse forces acting on the tread blocks, thus minimizing their displacement relative to one another in the transverse direction.

[0026] In the context of the invention, "central side" or "tread inside" means that the respective element on the respective component is oriented toward the equatorial plane, inward, or toward the central circumferential groove. "Shoulder side" or "tread outside" accordingly means an orientation facing outward toward the outside of the tread or toward a tire shoulder of the vehicle tire. Fig. 1 a section of a tire profile of a vehicle tire; Fig. 2 a detailed view of a central transverse groove which merges into a central circumferential groove of the tire tread according to Fig. 1 flows into it; and Fig. 3 a sectional view along the central transverse groove according to Fig. 2.

[0027] Fig. 1 schematically shows a section of a tread 1 of a vehicle tire 2, in particular a pneumatic vehicle tire, wherein only one tread half is shown. The tread half, not shown, has a comparable structure, preferably mirror-symmetrical thereto. The tire profile of the tread 1 shown is formed by providing a central circumferential groove 3 along the equatorial plane C of the vehicle tire 1, which is linear in plan view and runs in the circumferential direction U. Alternatively, two central circumferential grooves (not shown) can also be provided, which are parallel and spaced from one another adjacent to the equatorial plane C. Adjacent to this central circumferential groove(s) 3 in the transverse direction Q is a central tread block row 4, which is delimited on its other side by a shoulder-side circumferential groove 5. Adjacent to the shoulder-side circumferential groove 5 is a shoulder-side tread block row 6.

[0028] Between the central circumferential groove 3 and the shoulder-side circumferential groove 5, central transverse grooves 7 run parallel to each other, dividing the central tread block row 4 into central tread blocks 4a. The central transverse grooves 7 open with their central ends 7a into the central circumferential groove 3 and with their shoulder-side ends 7b into the shoulder-side circumferential groove 5. The central transverse grooves 7 run in a V-shape or angled manner in the transverse direction Q between the two circumferential grooves 3, 5.

[0029] In a similar way, the shoulder-side tread block row 6 is divided into shoulder-side tread blocks 6a by shoulder-side transverse grooves 8, wherein the shoulder-side transverse grooves 8 open in the transverse direction Q from the outside (outside of the tread) into the shoulder-side circumferential groove 5. The shoulder-side transverse grooves 8 run from the shoulder-side circumferential groove 5 in the transverse direction Q, likewise in a V-shape or at an angle to the outside of the tread, wherein the shoulder-side transverse grooves 8, in the embodiment shown, are angled less sharply relative to the transverse direction Q than the central transverse grooves 7. For example, an angle of 30° to 55°, in particular of at least 45°, can be provided for the central transverse grooves 7, and of between 5° and 20° for the shoulder-side transverse grooves 7.

[0030] In principle, it would also be possible for the tread 1 to have no circumferential grooves (or no central circumferential grooves) (not shown), and for the tread 1 to therefore be composed of tread block rows P running in the circumferential direction U, which are divided into individual tread blocks PB by transverse grooves R angled relative to the transverse direction Q. The following description is based on the central transverse grooves 7, as described, but is transferable accordingly to a tread 1 without (central) circumferential grooves 3, 5.

[0031] The central transverse grooves 7 are delimited by two groove flanks 9a, 9b and a groove base 9c, which form a substantially U-shaped profile, wherein the groove flanks 9a, 9b may also be slightly tilted relative to the vertical. The groove base 9c of the respective central transverse groove 7 is stepped in the extension direction E of the central transverse groove 7 in a central end region 10a, which is closer to the central end 7a of the central transverse groove 7 and, in the illustrated embodiment, also includes the central end 7a, as shown in the detailed view in Fig. 2 and the elevation profile in Fig. 3. This results in a local variation of a groove depth T (depth from the surface 4c of the central profile block 4a to the groove base 9c) of the central transverse groove 7 in the central end region 10a.

[0032] The gradation of the groove base 9c is selected such that the groove depth T decreases locally starting from a base depth T0 of the groove base 9c. The groove base 9c extends away from the central end region 10a in a non-graduated region, for example, also in a shoulder-side end region 10b of the central transverse groove 7, at this base depth T0. The base depth T0 does not necessarily lie at the so-called full tread depth T*, which is normally present at the deepest point in the circumferential grooves 3, 5.

[0033] In the groove base 9c, a raised portion 11, also referred to as a "tie bar," is formed locally as follows. Thus, in the central transverse grooves 7, starting from the central circumferential groove 3, which extends over the full tread depth T* (depth from the surface 4c of the central tread block to the groove base of the central circumferential groove 3), a raised portion 11a on the inside of the tread is initially arranged with a substantially horizontally extending cover surface 14a on the inside of the tread, so that initially a groove depth Ta on the inside of the tread (distance between 4c and 14a) is obtained that is less than the base depth T0. Via a local first depression 12a (groove), the elevation 11 merges into a central elevation part 11b with a substantially horizontally extending central cover surface 14b, which, starting from the groove depth Ta on the inside of the tread, leads to a reduction of the groove depth T to a mean groove depth Tb (distance between 4c and 14b).The middle elevation part 11b can also be further subdivided to achieve an additional gradation of elevation 11.

[0034] Via a local second depression 12b (groove), the elevation 11 then merges into an elevation part 11c on the outside of the tread with a substantially horizontally running cover surface 14c on the outside of the tread, which leads to an increase in the groove depth T to a groove depth Tc on the outside of the tread (distance between 4c and 14c), which in the illustrated embodiment corresponds to the groove depth Ta on the inside of the tread and is thus also less than the base depth T0. In principle, the groove depth Ta on the inside of the tread and the groove depth Tc on the outside of the tread can also be different, as long as T0 > Ta, Tc > Tb applies. This is followed by a local third depression 12c (groove) and then (or already before the third depression 12c) the elevation 11 ends, i.e. the central transverse groove 7 or the groove base 9c continues on the base depth T0.The groove base 9c of the central transverse groove 7 thus runs in the area of ​​the elevation 11 between the groove depths Ta, Tb, Tc and away from the elevation 11 at the base depth T0. If no central circumferential groove 3 is present, the elevation part 11a on the inside of the tread is arranged accordingly at the central or inside end of the respective transverse groove R, and the further elevation parts 11b, 11c follow in the outside direction of the tread.

[0035] The formed depressions 12a, 12b, 12c extend within the central transverse groove 7 in the circumferential direction U and serve as snow pockets for receiving and holding snow during operation of the vehicle tire 2.

[0036] The elevation 11, which is formed by the respective elevation parts 11a, 11b, 11c, is furthermore as in Fig. 2, the lamella 13 is divided or cut in the middle or along the extension direction E of the central transverse groove 7. This also divides the respective essentially horizontally extending cover surfaces 14a, 14b, 14c. A lamella 13 thus formed in the elevation 11 is delimited in the circumferential direction U by mutually parallel lamella side walls 13a, 13b, which extend in the extension direction E of the central transverse groove 7 over all elevation parts 11a, 11b, 11c and also the adjacent depressions 12a, 12b, 12c. A lamella width B13 (spacing of the lamella side walls 13a, 13b) is between 0.5 mm and 2 mm. The slat side walls 13a, 13b can be planar or non-planar, for example, in a complementary manner (repeatedly) three-dimensionally recessed and protruding.This prevents the slat side walls 13a, 13a from shifting against each other (too strongly) when transverse forces occur in the transverse direction Q.

[0037] The slat 13 preferably extends to the base depth T0 or slightly above, as in Fig.3. A sipe base 13c thus lies on a sipe base depth T13 (depth from surface 4c of the central tread block 4a), which corresponds to the base depth T0 or at least 80% of the base depth T0, in particular at least 90% of the base depth T0. Since two consecutive central tread blocks 4a in the circumferential direction U are no longer connected to one another across the central transverse groove 7 by the elevation 11, the central transverse groove 7 can open widely during operation of the vehicle tire 2. As a result, a leading edge 4b ​​(leading block edge) of the central tread block 4a adjacent to the central transverse groove 7 in the circumferential direction U can turn more sharply during operation of the vehicle tire 2, thereby improving the milling behavior.

[0038] At the same time, the wide opening of the central transverse groove 7 allows more snow to be trapped in this central transverse groove 7, which can then be optimally retained in the central transverse groove 7 by the multi-stepped groove base 9c and the depressions 12a, 12b, 12c. Snow-to-snow friction can thus be improved with good milling behavior. At the same time, high tread stiffness for dry braking can be achieved even without connecting adjacent central tread blocks 4a due to the very narrow sipe width B13. List of reference symbols 1 tread 2 vehicle tires 3 central circumferential groove 4 middle tread block row 4a middle profile block 4b Leading edge of the middle profile block 4a 4c Surface of the middle profile block 4a 5 shoulder-side circumferential groove 6 shoulder-side profile block row 6a shoulder-side profile block 7 middle transverse groove 7a central end of the middle transverse groove 7 7b shoulder-side end of the middle transverse groove 7 8 shoulder-side transverse grooves 9a, 9b Groove flanks of the middle transverse groove 7 9c Groove base of the middle transverse groove 7 10a central end area of ​​the middle transverse groove 7 10b shoulder-side end area of ​​the middle transverse groove 7 11 Survey 11a raised part on the inside of the tread 11b middle elevation section 11c raised part on the outside of the tread 12a first recess 12b second recess 12c third recess 13 slats 13a, 13b Slatted side walls 13c Lamellar base 14a inside tread cover surface of the inside tread elevation part 11a 14b middle cover surface of the middle elevation part 11b 14c Cover surface of the raised part 11c on the outside of the tread B13 slat width C Equatorial plane E Direction of extension of the transverse groove R; 7 P tread block row PB profile block Q transverse direction R transverse groove T Groove depth of the groove bottom 9c of the transverse groove R; 7 T* full tread depth T0 Base depth of the groove bottom 9c of the transverse groove R, 7 T13 slat base depth Ta inside tread groove depth Tb average groove depth Tc outside tread groove depth U circumferential direction 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 2019 217 439 A1

[0005] US 11,161,375 B2

[0007] DE 10 2015 214 483 A1

[0008] EP 2 660 078 B1

[0009] DE 10 2005 013 810 A1

[0010]

Claims

[1] Vehicle tyre (2) with a tread (1), wherein the tread (1) has at least one row of tread blocks (P; 4, 6) extending in the circumferential direction (U), wherein the at least one row of tread blocks (P; 4, 6) is divided into a plurality of tread blocks (PB; 4a, 6a) by transverse grooves (R; 7, 8), wherein the transverse grooves (R; 7, 8) each extend at an angle to a transverse direction (Q) in an extension direction (E), wherein a protrusion (11) comprising at least two protrusion parts (11a, 11b, 11c) is arranged in the respective transverse groove (R; 7, 8), wherein a groove depth (T) of a groove base (9c) of the respective transverse groove (R; 7, 8) in the region of the protrusion (11) is reduced compared to a base depth (T0) of the respective transverse groove (R; 7, 8), characterized by , that the elevation (11) is cut in the direction of extension (E) of the respective transverse groove (R; 7, 8) so that a lamella (13) with a lamella base (13c) is formed on a lamella base depth (T13), wherein the lamella (13) extends in the direction of extension (E) over all elevation parts (11a, 11b, 11c) of the elevation (11). [2] Vehicle tyre (2) according to claim 1, characterized by that the slat base (13c) extends over all elevation parts (11a, 11b, 11c) at a constant slat base depth (T13). [3] Vehicle tyre (2) according to claim 1 or 2, characterized by that the slat base depth (T13) of the slat base (13c) corresponds to at least 80% of the base depth (T0), preferably at least 90% of the base depth (T0), in particular is identical to the base depth (T0). [4] Vehicle tyre (2) according to claim 3, characterized bythat the base depth (T0) corresponds to between 60% and 100%, preferably between 70% and 80%, of a full profile depth (T*) of the tread (1). [5] Vehicle tyre (2) according to one of the preceding claims, characterized by that the slat (13) divides the elevation (11) in the middle. [6] Vehicle tyre (2) according to one of the preceding claims, characterized by that a slat width (B13) of the slat (13) is between 0.5mm and 2mm, preferably between 0.6mm and 0.8mm. [7] Vehicle tyre (2) according to one of the preceding claims, characterized by that the elevation (11) has, in the direction of extension (E) of the respective transverse groove (R; 7, 8), at least one elevation part (11a) on the inside of the tread, a central elevation part (11b) and one elevation part (11b) on the outside of the tread. [8] Vehicle tyre (2) according to claim 7, characterized by , that - a groove depth (Ta) on the inside of the tread is obtained above the raised part (11a) on the inside of the tread, - a mean groove depth (Tb) is obtained above the central raised part (11b), and - a groove depth (Tc) on the outside of the tread is produced above the raised part (11c) on the outside of the tread, the groove depth (Ta) on the inside of the tread, the mean groove depth (Tb) and the groove depth (Tc) on the outside of the tread being each less than the base depth (T0) of the respective transverse groove (R; 7, 8), and the mean groove depth (Tb) being less than the groove depth (Ta) on the inside of the tread and the groove depth (Tc) on the outside of the tread. [9] Vehicle tyre (2) according to claim 8, characterized by that the groove depth (Ta) on the inside of the tread and the groove depth (Tc) on the outside of the tread are identical. [10] Vehicle tyre (2) according to one of the preceding claims, characterized bythat groove-like depressions (12a, 12b, 12c) extending in the circumferential direction (U) are formed in the direction of extension (E) between the individual elevation parts (11a, 11b, 11c) of the elevation (11). [11] Vehicle tyre (2) according to one of the preceding claims, characterized by in that the lamella (13) is delimited in the circumferential direction (U) by lamella side walls (13a, 13b) which run parallel to one another and which run in the extension direction (E) of the respective transverse groove (R; 7, 8) over all elevation parts (11a, 11b, 11c), wherein the lamella side walls (13a, 13b) are non-planar and are three-dimensionally recessed and protruding. [12] Vehicle tyre (2) according to claim 11, characterized by that the slat side walls (13a, 13b) are repeatedly three-dimensionally recessed and protruding. [13] Vehicle tyre (2) according to one of the preceding claims, characterized bythat the transverse grooves (R; 7, 8) each run at an angle of between 30° and 55° to the transverse direction (Q) in the extension direction (E), preferably parallel to one another. [14] Vehicle tyre (2) according to one of the preceding claims, characterized by that the groove base (9c) of the respective transverse groove € runs in the direction of extension € next to the elevation (11), in particular in the direction towards the outside of the shoulder, on the base depth (T0). [15] Vehicle tyre (2) according to one of the preceding claims, characterized by , that the tread block row (PB) is a middle tread block row (4) and the transverse grooves € are middle transverse grooves (7), wherein the tread (1) has at least one central circumferential groove (3) and shoulder-side circumferential grooves (5), wherein the shoulder-side circumferential grooves (5) extend offset on both sides in the transverse direction (Q) to the at least one central circumferential groove (3), wherein the at least one central circumferential groove (3) extends adjacent to an equatorial plane € of the vehicle tire (2) in the circumferential direction (U) and between the at least one central circumferential groove (3) and the respective shoulder-side circumferential groove (5) the middle tread block row (4) extending in the circumferential direction (U) is arranged, wherein the respective middle profile block row (4) is divided into middle profile blocks (4a) by the middle transverse grooves (7), wherein the middle transverse grooves (7) each extend at an angle to the transverse direction (Q) in the extension direction € and each open with a central end (7a) into the at least one central circumferential groove (3) and open with a shoulder-side end (7b) into the respective shoulder-side circumferential groove (5), wherein the cut-out elevation (11) from the plurality of elevation parts (11a, 11b, 11c) with the lamella (13) is arranged in the respective central transverse groove (7), wherein the groove depth (T) of the groove base (9c) of the central transverse groove (7) in the region of the elevation (11) is reduced compared to the base depth (T0) of the central transverse groove (7), wherein the elevation (11) is arranged in a central end region (10a) of the central transverse groove (7) and the central end region (10a) adjoins the central end (7a) of the central transverse groove (7).

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