Vehicle pneumatic tires

Abstract

The invention relates to a pneumatic vehicle tire, in particular a commercial vehicle tire, comprising a tread with at least one tread rib (1) extending in the circumferential direction, the tread rib being delimited on at least one side by a circumferential groove (2a) embodied with a tread depth (T1), and the tread rib being traversed by cutouts (3) extending parallel to one another in at least groups in a top view and at an angle of 0° to 50° to the axial direction and having a width (b) of 0.4 mm to 3.0 mm. E ), wherein each cutout (3) has a cutout main section (3b) extending over a large part of its extension and opens into each circumferential groove (2a) delimiting the tread rib (1) with a cutout edge section (3a), wherein the cutout main section (3b) and the cutout edge section (3a) each have a depth (t a , t b ) and the depth of the main section of the cut (3b) (t a ) is different from the depth (t b ), the depth of the main section of the cut (3b) (t b ) is less than the depth (t a ), wherein the cut edge section (3a) opens over its entire extension inside the tread rib (1) into a cavity (4, 4) starting from the circumferential groove (2) and being wider than the cut (3) I to 4 IV )middle.

Description

Technical Field

[0001] The present invention relates to a pneumatic vehicle tire, in particular a commercial vehicle tire, comprising a tread with at least one tread rib extending in the circumferential direction, the tread rib being delimited on at least one side by a circumferential groove implemented with a tread depth, and the tread rib being traversed by cuts, which extend parallel to one another in at least groups in a top view and at an angle of 0° to 50° to the axial direction and have a width of 0.4 mm to 3.0 mm, wherein each cut has a cut main section extending over a large part of its extension and respectively opens with a cut edge section into a respective circumferential groove delimiting the tread rib, wherein the cut main section and the cut edge section each have a depth in the radial direction, and the depth of the cut main section differs from the depth of the cut edge section. Background Art

[0002] For example, WO 2015 / 128106 A1 discloses a pneumatic vehicle tire of the type mentioned at the outset. This pneumatic vehicle tire can be a tire for passenger motor vehicles, trucks, or heavy-duty trucks (commercial vehicles). According to an embodiment, the tire has a tread with tread ribs separated from one another by circumferential grooves and divided into tread blocks by transverse grooves. Axially extending cuts are formed in the tread ribs, each having a width of 0.4 mm to 0.6 mm. Viewed from above, the cuts each consist of a main cut section extending over at least 50% of the cut length (in this embodiment, over a substantial portion of the cut extent) and two cut edge sections extending into the circumferential grooves. The main cut section has a depth of at least 70% of the tread depth, and the cut edge sections have a depth of 30% to 70% of the depth of the main cut section. A depression is formed on at least one of the cut walls, the depression being located radially inward at a depth of 50% of the tread depth, surrounded by the cut wall of at least 2 mm on the edge side, and improving the water absorption capacity of the cut.

[0003] As is well known, tire tread ribs are provided with cutouts to improve grip. While the cutouts facilitate water drainage from the tread pattern, their ability to absorb water decreases with increasing tread wear, thereby reducing wet grip. Furthermore, the cutouts undesirably reduce the stiffness of the tread ribs, thereby affecting the transfer of traction to the ground. Summary of the Invention

[0004] The invention is based on the object of enabling good wet grip properties to be achieved in a pneumatic vehicle tire of the type mentioned initially over the entire tread wear period, while at the same time maintaining a tread stiffness which is advantageous for traction transmission.

[0005] According to the invention, the proposed object is achieved in that the depth of the main section of the cut is less than the depth of the edge section of the cut, wherein the edge section of the cut opens over its entire extension within the tread rib into a cavity that is wider than the cut and originates from the circumferential groove.

[0006] In the case of a new or lightly worn tread, the cuts (particularly due to their ability to open significantly when driving over the wheel tracks) ensure good drainage of the tread rib, so that the cut edges can optimally perform their function as gripping edges on wet surfaces. Compared to treads with cuts in which the main cut sections are implemented deeper, the shallower cut main sections ensure high tread rib stiffness, which is beneficial for traction transmission, throughout the tire's service life (tread wear). As tread wear progresses, cavities extend into the tread periphery. As the tread rib becomes stiffer due to wear, these cavities, due to their wider design compared to the cuts, can continue to achieve good water absorption, with the absorbed water advantageously draining directly into the circumferential groove(s). Consequently, the edge at the tread periphery created by the cavities functions particularly effectively as a gripping edge.

[0007] According to a preferred embodiment, the cavity has a width at its widest point, viewed in cross section through the cutout, of 200% to 500%, in particular 300% to 400%, preferably 330% to 370% of the width of the cutout. This contributes to better water absorption when driving on wet roads, thereby further improving wet grip.

[0008] Furthermore, it is advantageous if, viewed in cross section through the cutout, the cavity is circular or has a length in the radial direction of 25% to 45%, in particular 30% to 40%, preferably 33% to 37% of the tread depth. In particular, narrow, elongated cavities have proven to be particularly advantageous with regard to water absorption and drainage to the circumferential groove.

[0009] According to another preferred embodiment, the cavity reaches a depth in the radial direction of 75% to 100%, in particular up to 95%, of the tread depth. This helps to maintain good wet grip performance during tread wear.

[0010] It is also advantageous for traction transmission if the depth of the main section of the cut is 10% to 30%, in particular up to 25%, and preferably up to 20% of the tread depth.

[0011] A particularly advantageous compromise with respect to wet grip performance and tread stiffness in relation to traction transmission can be achieved by virtue of the fact that the depth of the cut edge section is 200% to 400%, in particular 250% to 350%, particularly preferably 290% to 310%, of the depth of the cut main section.

[0012] According to another preferred embodiment, the cut edge sections, viewed in cross section through the cut, extend in the shape of a wave, in particular a harmonic wave, particularly preferably a zigzag harmonic wave or a sawtooth harmonic wave. This allows for a favorable supporting effect of the tread rib segments formed by the cuts with regard to tread stiffness, particularly in the case of new or lightly worn treads.

[0013] Another preferred embodiment is characterized in that the cutout is designed to be straight with respect to its center line in a top view, and the cutout edge sections extend in a straight line when viewed from above. This is particularly advantageous with regard to the opening capacity of the cutout and thus with regard to water absorption, thus contributing to improved wet grip.

[0014] According to another preferred embodiment, the main section of the cut, viewed in plan view, extends over at least a large portion of its extent, in particular over at least 70% of its length measured along the center line of the cut, in the form of a wave, in particular a harmonic wave, particularly preferably a zigzag harmonic wave or a sawtooth harmonic wave. This measure contributes in particular to further increasing the transverse stiffness of the tread rib.

[0015] In this embodiment, it is also advantageous if the wavelength of the waves of the main section of the cutout is 25% to 40%, in particular up to 33%, of the length measured along the center line of the cutout.

[0016] Furthermore, in this embodiment, it is advantageous if the amplitude of the waves of the main section of the cut is 75% to 200%, in particular 125% to 175%, of the width of the cut.

[0017] It is also advantageous for the rigidity of the tread rib if the wave pattern present in the cross section of the cut in the cut edge section is continued in the cut main section.

[0018] According to another preferred embodiment, the main section of the cut has a length, measured along the center line of the cut, which is 65% to 90%, in particular up to 85%, of the length of the cut measured in the same manner. Thus, in this embodiment, the shallower main section of the cut extends over a large portion of the cut, which is advantageous with regard to tread stiffness.

[0019] A further preferred embodiment is characterized in that the cavity has a plane of symmetry extending in the radial direction, which contains a center line of the cutout oriented in the direction of extension of the cutout in top view.

[0020] Another preferred embodiment relates to a pneumatic vehicle tire having a tread with at least one tread rib, which is delimited on each side by a circumferential groove implemented at the same depth as the tread, wherein the cuts each consist of a cut main section and two cut edge sections, wherein the cut edge sections each open into a cavity extending from the respective circumferential groove and being implemented wider than the cut. Providing such a specially designed cut in the central tread rib is particularly advantageous because the described effect is produced to a greater extent in such a cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Further features, advantages and details of the present invention will now be explained in more detail with reference to the accompanying drawings which schematically illustrate exemplary embodiments of the present invention. In the drawings:

[0022] Figure 1 shows a simplified top view of a tread block of a tread of a commercial vehicle tire according to a first embodiment of the invention;

[0023] Figure 2 an enlarged oblique view showing a visual portion of a cutout formed in a tread block;

[0024] Figure 3 Shown Figure 2 Front view of the incision visualization part;

[0025] Figure 4 Shown Figure 2 Simplified top view of the cutout visualization portion;

[0026] Figure 5 Shown along Figure 3 and Figure 4 The section of line VV;

[0027] Figure 6 Shown along Figure 3 and Figure 4 The section along line VI-VI of ; and

[0028] Figures 7a to 7d In a further embodiment variant, a section through a subregion of the cutout is shown.

[0029] List of Reference Numerals

[0030] 1...................Tread block

[0031] 2a..................Circumferential groove

[0032] 2b..................Transverse grooves

[0033] 3...................Incision

[0034] 3a..................Incision edge segment

[0035] 3b..................Incision main section

[0036] 4,4 I to 4 IV ..........Cavity

[0037] 4"'a...............Radial outer space part

[0038] 4”'b...............Radial inner space part

[0039] 5...................Incision wall

[0040] A b ..................amplitude

[0041] b E , b HR ..............width

[0042] d HR ..................diameter

[0043] E1, E2, E3, E4........Symmetry planes

[0044] l a , l b , l E , l HR .......length

[0045] m E ..................Center line

[0046] t a , t b , t HR ...........depth

[0047] T1..................Tread depth

[0048] λ b .................wavelength DETAILED DESCRIPTION

[0049] The pneumatic vehicle tire according to the invention is a tire for motor vehicles, in particular for multi-track motor vehicles, and preferably a commercial vehicle tire of radial construction, in particular for trucks or buses.

[0050] exist Figure 1 1 shows a tread block 1 of a commercial vehicle tire tread, which is formed in the middle tread area and is elongated in the circumferential direction. The tread block is part of a tread rib that runs circumferentially and is designed as a block row. The tread block 1 is laterally delimited by circumferential grooves 2a, which, in the embodiment shown, extend in a straight line in top view. In the circumferential direction, the tread block 1 is delimited by transverse grooves 2b, to which other tread blocks 1 belonging to the tread rib are preferably connected. The circumferential grooves 2 extend radially with a correspondingly set tread depth T1 ( Figure 6 ) is implemented, the tread depth is preferably 10.0 mm to 25.0 mm for commercial vehicle tires.

[0051] The tread block 1 is provided with a plurality of cutouts 3 in its circumferential direction. These cutouts 3 cross the tread block 1 and are (with respect to a center line m oriented in the extending direction of the cutouts 3) E ) extend parallel to each other in a top view and in this embodiment in the axial direction. Figures 2 to 6 A further embodiment of the cutout 3 is explained with reference to the cutout 3 shown in FIG.

[0052] The cut 3 has a bisecting center line m E The symmetry plane E1 ( Figure 3 、 Figure 4 ).like Figures 2 to 4 In particular, as shown in conjunction with one another, the cut 3 (seen in top view) is composed of two cut edge sections 3a and a cut main section 3b extending over a large part of the extent of the cut, wherein the cut edge sections 3a each open into a cavity 4 originating from the corresponding circumferential groove 2 within the tread block 1 over their entire extent ( Figure 1 Combine Figure 2 and Figure 6 ).

[0053] The cutout 3 has two correspondingly embodied cutout walls 5 ( Figure 2 、 Figures 4 to 6 ), a constant width b of 0.4 mm to 3.0 mm, in particular a maximum of 2.0 mm, measured between the cutout walls 5 E ( Figures 4 to 6 ), and along the center line m E Measured length l E ( Figure 4 ).

[0054] Observe in top view ( Figure 4 ), the cut edge segments 3a extend straight and flush with each other, with a tread periphery along the center line m E The measured length l, which is especially constant over its radial extension a ( Figure 4 ) and the corresponding depth t in the radial direction a ( Figure 3 、 Figure 6 ). At right angles to the center line m E Observe on the cross section ( Figure 6 ), the cut edge section 3a also extends in a zigzag shape toward the radial inner side of the tread block 1 ( Figure 2 、 Figure 6 ) and throughout its length l a Depth t a Into the cavity 4 mentioned above ( Figure 2 、 Figure 3 ). Therefore, in the cut edge section 3a, at a position perpendicular to the center line m E Observing from the cross section, the cut wall 5 has a corresponding zigzag trend in the radial direction ( Figure 6 ).

[0055] according to Figure 4 The main incision section 3b has a center line m along the periphery of the tread. E The measured length l, which is especially constant over its radial extension b , which is the length l of the cut 3 E 65% to 90%, in particular up to 85%; observed in a top view, the main section of the cut is at least in its length l b Most of the b At least 70% of the b and Amplitude A b The shape of the zigzag harmonics, wherein in the embodiment shown the notched main section extends over 2.5 times the wavelength λ b , that is, extending 1.25 times the wavelength λ on each side of the symmetry plane E1 b Wavelength λ b is the length l b 25% to 40%, especially up to 33%, the amplitude A b is the width b of the cut 3 E 75% to 200%, in particular 125% to 175%. In addition, the main section 3b of the cutout has a constant depth t in the radial direction. b ( Figure 3 、 Figure 5 ), which is the tread depth T1 ( Figure 6), in particular up to 25%, preferably up to 20%, wherein in this embodiment, the above-mentioned zigzag trend formed by the cut wall 5 in the cut edge section 3a in the radial direction is continued in the cut main section 3b ( Figure 2 、 Figure 5 In the embodiment shown, the depth t of the cutout main section 3b is b is chosen so that (at right angles to the center line m E The main section 3b of the cut extends over a single zigzag portion and is thus implemented in a V-shape ( Figure 5 ).

[0056] like Figure 3 、 Figure 4 and Figure 6 As shown in combination, the aforementioned cavities 4 each have: E Extended symmetry plane E2 ( Figure 3 、 Figure 4 ), a symmetry plane E3 ( Figure 3 、 Figure 6 ), and a plane extending orthogonally (perpendicularly) to the symmetry plane E2 and containing the center line m E Symmetry plane E4( Figure 4 、 Figure 6 ). The cavity 4 is radially spaced from the periphery of the tread until it reaches a depth t HR ( Figure 3 、 Figure 6 ), which is 75% to 100%, in particular up to 95%, of the tread depth T1; the cavity is elongated in the radial direction; the cavity has a length l in the radial direction on the symmetry plane E2 HR ( Figure 3 ), which is the tread depth T1 ( Figure 6 ) 25% to 45%, in particular 30% to 40%, preferably 33% to 37%; and the cavity has a width b measured perpendicular to the symmetry plane E4 on the symmetry plane E3 HR ( Figure 6 ), which is the width b of the cut 3 E ( Figure 6 ) 200% to 500%, especially 300% to 400%, preferably 330% to 370%. Figure 6 As shown, perpendicular to the center line m E The cavity 4 is implemented in the shape of a rectangle with a semicircle instead of a short side when viewed in cross section. Figure 3 The cavities 4 are also designed so that they do not extend beyond the cutout edge section 3a, ie do not extend into the radially inner region of the cutout main section 3b.HR , length l HR and depth t a Match each other so that the cut edge section 3a ( Figure 3 、 Figure 6 ) depth t a is the depth t of the cutout main section 3b b 200% to 400%, in particular 250% to 350%, particularly preferably 290% to 310%.

[0057] Figures 7a to 7d The cavity 4 is shown I to 4 IV The cross section of these cavities is a variant of the cavity 4. The aforementioned depth t of the cut edge section 3a a With cavity 4 I to 4 IV The design of the cavity 4 is adapted so that I to 4 IV Until the aforementioned depth t is reached HR ( Figure 3 ), which is 75% to 100%, in particular up to 95%, of the tread depth T1.

[0058] Cavity 4 I ( Figure 7a ) is different from cavity 4 in that the former (at right angles to the centerline m E is implemented in an elliptical shape) when viewed in cross section.

[0059] Cavity 4 II ( Figure 7b ) is different from cavity 4 in that the former (at right angles to the centerline m E is implemented in the shape of a rectangle whose corners are rounded along a quarter circle, for example (as viewed in cross section).

[0060] Cavity 4 III ( Figure 7c ) is symmetrical only about the mentioned planes of symmetry E2 and E4; it (at right angles to the center line m E The cross section is observed) in the shape of a water drop and is composed of a radial outer space portion 4 III a and radial inner space portion 4 III b is combined into, wherein the radial inner space portion 4 III b has a volume greater than that of the radially outer space portion 4 III The volume of a. At a point perpendicular to the center line m E Observing from the cross section, the radial inner space portion 4 III b is implemented in the shape of a substantially isosceles trapezoid elongated in the radial direction, wherein the base (longer base side) of the trapezoid is adjacent to the radial outer space portion 4.III a. At right angles to the center line m E Observing from the cross section, the radial outer space portion 4 III a is embodied as an isosceles triangle, wherein the legs of the triangle are curved concavely toward each other, ie inwardly. III All corner regions of are embodied as rounded.

[0061] Cavity 4 IV ( Figure 7d ) has a perfect circular cross section with a diameter d HR is the width b of the cut 3 E ( Figures 4 to 6 ), 200% to 500%, especially 300% to 400%, preferably 330% to 370%.

[0062] The invention is not restricted to the described exemplary embodiments.

[0063] The tire tread comprises at least one circumferentially extending tread rib with transverse cutouts. The tread rib may have a transverse groove structure extending transversely within the tread block and / or a block-like structure with transverse grooves terminating in a blind groove pattern. The tread rib is delimited at least on one side by a circumferential groove extending arbitrarily, for example, in a zigzag pattern in top view, into which the cutouts each extend via a cutout edge section. Such tread ribs particularly include shoulder-side tread ribs, wherein the transverse cutouts extend at least to the corresponding lateral edge of the ground contact surface (the wheel track measured in a static state according to the ETRTO standard, by measuring the tire mounted on a standard rim, at a load of 70% of the maximum load capacity and an internal pressure of 85% of the standard pressure). In top view, the cutouts may extend at an angle of 0° to 50° (relative to their centerline) to the axial direction. Furthermore, in a top view, the cutout can extend in any desired manner, for example, in a straight line or in an overall or partial arcuate or wavy manner. In the case of a cutout extending in an arcuate manner, at least in partial arcuate manner, the center line follows the arcuate course, wherein the angle at which such a cutout extends relative to the axial direction is measured relative to a line connecting the end points of the center line and extending in a straight line in a top view.

Claims

1. A pneumatic vehicle tire having a tread with at least one tread rib (1) extending in the circumferential direction, the tread rib being delimited on at least one side by a circumferential groove (2a) implemented with a tread depth (T1), and the tread rib being traversed by cutouts (3), which extend in plan view, at least in groups, parallel to one another and at an angle of 0° to 50° to the axial direction and having a width (b) of 0.4 mm to 3.0 mm. E ), wherein each cut (3) has a cut main section (3b) extending over a large part of its extension range and respectively opens into each circumferential groove (2a) defining the tread rib (1) with a cut edge section (3a), wherein the cut main section (3b) and the cut edge section (3a) respectively have a depth (t a , t b ) and the depth of the main section of the cut (3b) (t a ) is different from the depth (t b ), It is characterized by: The depth (t b ) is less than the depth (t a ), wherein the cut edge section (3a) opens over its entire extension inside the tread rib (1) into a cavity (4, 4) which originates from the circumferential groove (2) and is wider than the cut (3). I to 4 IV )middle, When viewed in cross section of the cutout (3), the cavity (4, 4 I to 4 IV ) in the radial direction (l HR ) is 25% to 45% of the tread depth (T1).

2. The vehicle pneumatic tire according to claim 1, wherein: Observing the cross section of the cutout (3), the cavity (4, 4 I to 4 IV ) has a width (b) at its widest point HR ) is the width of the cutout (3) (b E ) of 200% to 500%.

3. The vehicle pneumatic tire according to claim 2, wherein: Observing the cross section of the cutout (3), the cavity (4, 4 I to 4 IV ) has a width (b) at its widest point HR ) is the width of the cutout (3) (b E ) 300% to 400%.

4. The vehicle pneumatic tire according to claim 3, wherein: Observing the cross section of the cutout (3), the cavity (4, 4 I to 4 IV ) has a width (b) at its widest point HR ) is the width of the cutout (3) (b E ) of 330% to 370%.

5. The vehicle pneumatic tire according to claim 1, wherein: Observing the cross section of the cutout (3), the cavity (4, 4 I to 4 IV ) is circular or has a length in the radial direction (l HR ) is 30% to 40% of the tread depth (T1).

6. The vehicle pneumatic tire according to claim 5, characterized in that: Observing the cross section of the cutout (3), the cavity (4, 4 I to 4 IV ) in the radial direction (l HR ) is 33% to 37% of the tread depth (T1).

7. The vehicle pneumatic tire according to claim 1, wherein: The cavity (4, 4 I to 4 IV ) in the radial direction (t HR ) is 75% to 100% of the tread depth (T1).

8. The vehicle pneumatic tire according to claim 7, wherein: The cavity (4, 4 I to 4 IV ) in the radial direction (t HR ) is up to 95% of the tread depth (T1).

9. The vehicle pneumatic tire according to claim 1, wherein: The depth (t b ) is 10% to 30% of the tread depth (T1).

10. The vehicle pneumatic tire according to claim 9, wherein: The depth (t b ) is up to 25% of the tread depth (T1).

11. The vehicle pneumatic tire according to claim 10, wherein: The depth (t b ) is up to 20% of the tread depth (T1).

12. The vehicle pneumatic tire according to claim 1, wherein: The depth (t a ) is the depth of the main section (3b) of the cut (t b ) of 200% to 400%.

13. The vehicle pneumatic tire according to claim 12, wherein: The depth (t a ) is the depth of the main section (3b) of the cut (t b ) of 250% to 350%.

14. The vehicle pneumatic tire according to claim 13, wherein: The depth (t a ) is the depth of the main section (3b) of the cut (t b ) of 290% to 310%.

15. The vehicle pneumatic tire according to claim 1, wherein: When viewed in cross section of the cutout (3), the cutout edge section (3a) is wavy in shape.

16. The vehicle pneumatic tire according to claim 15, wherein: When viewed in a cross section of the cutout (3), the cutout edge section (3a) extends in a harmonic shape.

17. The vehicle pneumatic tire according to claim 16, wherein: When viewed in cross section of the cutout (3), the cutout edge section (3a) extends in the shape of a zigzag harmonic or a sawtooth harmonic.

18. The vehicle pneumatic tire according to claim 1, wherein: The cutout (3) is oriented in plan view with respect to its center line (m E ) is implemented in a straight line, and the cutout edge section (3a) extends in a straight line when viewed in a top view.

19. The vehicle pneumatic tire according to claim 1, wherein: When viewed in plan view, the cutout main section (3b) extends in a wave-like manner at least over a large part of its extent.

20. The vehicle pneumatic tire according to claim 19, wherein: When viewed in plan view, the main cutout section (3b) extends in a harmonic shape at least over a large part of its extent.

21. The vehicle pneumatic tire according to claim 20, wherein: When viewed in plan view, the main cutout section ( 3 b ) extends in the form of a zigzag harmonic or sawtooth harmonic at least over a large part of its extent.

22. The vehicle pneumatic tire according to claim 19, wherein: When viewed from above, the main section (3b) of the cutout is located along the center line (m E ) measured length (l b ) extends in a wave shape over at least 70% of the 23. The vehicle pneumatic tire according to claim 22, wherein: When viewed from above, the main section (3b) of the cutout is located along the center line (m E ) measured length (l b ) extends in a harmonic shape over at least 70% of the 24. The vehicle pneumatic tire according to claim 23, wherein: When viewed from above, the main section (3b) of the cutout is located along the center line (m E ) measured length (l b ) extends in the shape of a zigzag harmonic or a sawtooth harmonic over at least 70% of the 25. The vehicle pneumatic tire according to claim 19, wherein: The wavelength (λ b ) is the center line of the cut (3) (m E ) measured length (l b ) of 25% to 40%.

26. The vehicle pneumatic tire according to claim 25, wherein: The wavelength (λ b ) is the center line of the cut (3) (m E ) measured length (l b ) up to 33%.

27. The vehicle pneumatic tire according to claim 19, wherein: The amplitude of the wave of the main section (3b) of the cut (A b ) is the width of the cut (3) (b E ) of 75% to 200%.

28. The vehicle pneumatic tire according to claim 27, wherein: The amplitude of the wave of the main section (3b) of the cut (A b ) is the width of the cut (3) (b E ) of 125% to 175% of the total GDP.

29. The vehicle pneumatic tire according to claim 15, wherein: The wave pattern present in the cutout edge section (3a) on the cross section of the cutout (3) continues in the cutout main section (3b).

30. The vehicle pneumatic tire according to claim 1, wherein: The main section (3b) of the cutout has a center line (m E ) measured length (l b ) is the length of the cut (3) measured in the same way (l E ) of 65% to 90%.

31. The vehicle pneumatic tire according to claim 30, wherein: The main section (3b) of the cutout has a center line (m E ) measured length (l b ) is the length of the cut (3) measured in the same way (l E ) up to 85%.

32. The vehicle pneumatic tire according to claim 1, wherein: The cavity (4, 4 I to 4 IV ) has a symmetry plane (E4) extending in the radial direction, which contains the center line (m) of the cutout (3) oriented in the extension direction of the cutout (3) in a top view. E ).

33. A pneumatic vehicle tire according to claim 1, comprising a tread with at least one tread rib (1) delimited on each side by a circumferential groove (2a) implemented with a tread depth (T1), characterized in that The cutouts (3) are each composed of a cutout main section (3b) and two cutout edge sections (3a), wherein the cutout edge sections (3a) each open into a cavity (4, 4) extending from the corresponding circumferential groove (2) and being wider than the cutout (3). I to 4 IV )middle.

34. The vehicle pneumatic tire according to any one of claims 1 to 33, characterized in that The vehicle pneumatic tire is a commercial vehicle tire.

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