JP2023113456A - tire - Google Patents

Abstract

To be able to further improve wear resistant performance while maintaining snow performance.SOLUTION: A tire 1 has a tread part 2. The tread part 2 is provided with a shoulder circumferential direction groove 3 and a shoulder land part 5. The shoulder land part 5 is provided with a vertical sipe 7, a shoulder lateral groove 8 located further inside than the vertical sipe 7 in a tire axial direction, and an outer lateral sipe 9 located further outside than the vertical sipe 7 in the tire axial direction. No lateral groove is provided outside the vertical sipe 7 of the shoulder land part 5 in the tire axial direction.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to tires.

Patent Literature 1 listed below describes a pneumatic tire having a shoulder land portion in a tread portion. The shoulder land portion includes longitudinal narrow grooves extending in the tire circumferential direction, outer shoulder inclined lateral grooves extending axially outward from the longitudinal narrow grooves, and inner shoulder inclined lateral grooves extending axially inward from the longitudinal narrow grooves. A horizontal groove is arranged.

JP 2016-97779 A

BACKGROUND ART In recent years, tires, especially all-season tires, which are frequently driven on snowy roads, are required to have further improved wear resistance performance while maintaining snow performance.

The present disclosure has been devised in view of the actual situation as described above, and a main object of the present disclosure is to provide a tire that can further improve wear resistance performance while maintaining snow performance.

The present disclosure provides a tire having a tread portion, wherein the tread portion includes a shoulder circumferential groove adjacent to a first tread end and a shoulder land portion located axially outside the shoulder circumferential groove. The shoulder land portion includes a longitudinal sipe extending in the tire circumferential direction, a plurality of shoulder lateral grooves positioned axially inward of the longitudinal sipe and extending in the tire axial direction, and the longitudinal A plurality of outer lateral sipes positioned axially outward of the sipes are provided, and lateral grooves are not provided axially outward of the longitudinal sipes of the shoulder land portion. is.

By adopting the above configuration, the tire of the present disclosure can further improve wear resistance performance while maintaining snow performance.

1 is a plan view of a tread portion of a tire showing an embodiment of the present disclosure; FIG. FIG. 2 is a plan view of the shoulder land portion of FIG. 1; It is a top view of a tread part.

An embodiment of the present disclosure will be described below with reference to the drawings.
FIG. 1 is a plan view of a tread portion 2 of a tire 1 of this embodiment. FIG. 1 shows an all-season pneumatic tire 1 mounted on a light truck as a preferred embodiment. It should be noted that the present disclosure can also be applied to pneumatic tires 1 for passenger cars, heavy loads, and tires 1 of other categories.

As shown in FIG. 1, the tread portion 2 has a shoulder circumferential groove 3 adjacent to the first tread end T1, and a shoulder land portion 5 located axially outside the shoulder circumferential groove 3. is provided.

The shoulder land portion 5 of this embodiment is provided with a longitudinal sipe 7 extending in the tire circumferential direction, a plurality of shoulder lateral grooves 8 , and a plurality of outer lateral sipes 9 . Each of the shoulder lateral grooves 8 is located inside the longitudinal sipe 7 in the axial direction of the tire and extends in the axial direction of the tire. Each outer lateral sipe 9 is positioned axially outside the longitudinal sipe 7 . In this specification, the sipes including the vertical sipes 7 refer to cut-shaped ones having a width of less than 1.5 mm and provided on the tread surface of the tread portion 2 . Further, in this specification, the grooves including the shoulder circumferential grooves 3 and the shoulder lateral grooves 8 refer to grooves having a width of 1.5 mm or more provided on the tread surface. Thus, herein a clear distinction is made between sipes and grooves. In this specification, in the shoulder land portion 5, a region axially inner than the vertical sipes 7 is defined as an inner region 5A, and a region axially outer than the vertical sipes 7 is defined as an outer region 5B.

In general, when the vehicle travels straight ahead, the tire 1 has a relatively larger contact pressure on the inner region 5A than on the outer region 5B. In the tire 1 of the present disclosure, by providing the longitudinal sipes 7 in the shoulder land portion 5 and providing the shoulder lateral grooves 8 in the inner region 5A, it is possible to exhibit great traction on snowy roads and maintain sufficient snow performance. On the other hand, the outer side lateral sipes 9 moderately reduce the rigidity of the outer region 5B and promote deformation of the shoulder land portion 5 when the tire touches the ground. As a result, the ability to remove snow from the shoulder lateral grooves 8 is enhanced. In addition, the vertical sipes 7 are useful for deformation of the shoulder land portion 5 at the time of contact with the ground, and suppresses a large decrease in the rigidity of the shoulder land portion 5 in the tire circumferential direction.

In the shoulder land portion 5, no lateral groove is provided outside the longitudinal sipe 7 in the tire axial direction (outer region 5B). Thereby, the rigidity of the shoulder land portion 5 is maintained high, and the wear resistance performance is improved. Therefore, the tire 1 of the present disclosure can further improve wear resistance performance while maintaining snow performance. Moreover, such a shoulder land portion 5 has high rolling resistance performance and is excellent in fuel efficiency.

The tread portion 2 of the present embodiment adopts a point-symmetrical pattern with an arbitrary point on the tire equator C as the center of symmetry. Thus, the tread portion 2 of the present embodiment is provided with a pair of first tread edges T1, T1 and a pair of shoulder circumferential grooves 3, 3. As shown in FIG. The tread portion 2 may be formed as a line-symmetrical pattern with the tire equator C as the axis of symmetry, for example. Further, the tread portion 2 is not limited to the point-symmetrical pattern or line-symmetrical pattern.

The first tread edge T1 is defined as the outermost ground contact position in the tire axial direction when the tire 1 in a normal state is loaded with a normal load and grounded on a flat surface with a camber angle of 0 degrees. The axial distance between the first tread edges T1, T1 is the tread width TW.

The "normal condition" is a state in which the tire 1 is mounted on a normal rim (not shown) and is inflated to a normal internal pressure with no load. Unless otherwise specified, the dimensions and the like of each portion of the tire 1 are values measured in this normal state.

The above-mentioned "regular rim" is a rim defined for each tire by each standard in the standard system including the standard on which the tire is based. , "Measuring Rim" for ETRTO.

The above-mentioned "regular internal pressure" is the air pressure specified for each tire by each standard in the standard system including the standard on which the tire is based. LIMITS AT VARIOUS COLD INFLATION PRESSURES", and for ETRTO, "INFLATION PRESSURE".

The "regular load" is the load defined for each tire by each standard in the standard system including the standards on which the tire is based. LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES", and for ETRTO, "LOAD CAPACITY".

The tread portion 2 of the present embodiment includes a crown circumferential groove 4 arranged inside the shoulder circumferential groove 3 in the tire axial direction, and a crown land portion arranged inside the shoulder circumferential groove 3 in the tire axial direction. 6 are provided.

The shoulder circumferential groove 3, for example, extends linearly continuously in the tire circumferential direction. Such shoulder circumferential grooves 3 suppress a decrease in rigidity of land portions adjacent to the shoulder circumferential grooves 3 . The shoulder circumferential groove 3 is not limited to a straight groove.

The groove width W1 of the shoulder circumferential groove 3 is, for example, desirably 4% or more, more desirably 5% or more, desirably 8% or less, and more desirably 7% or less of the tread width TW. A groove depth (not shown) of the shoulder circumferential groove 3 is, for example, preferably 8.0 mm or more, more preferably 9.0 mm or more, preferably 12.0 mm or less, and further preferably 11.0 mm or less.

In this embodiment, the crown circumferential groove 4 includes an inclined portion 4A that is inclined with respect to the tire circumferential direction, and an axial portion 4B that is connected to the inclined portion 4A and extends in the tire axial direction. The crown circumferential groove 4 has, for example, a zigzag shape in which inclined portions 4A and axial portions 4B are alternately arranged in the tire circumferential direction. Such crown circumferential grooves 4 exert snow column shear force to improve snow performance.

The angle α1 of the inclined portion 4A with respect to the tire circumferential direction is desirably 5 degrees or more, more desirably 10 degrees or more, desirably 30 degrees or less, and more desirably 25 degrees or less. Since the angle α1 is 5 degrees or more, the shear force of the snow column is exerted. Since the angle α1 is 30 degrees or less, the ability to remove snow from the inclined portion 4A is maintained at a high level.

A groove width W2 of the crown circumferential groove 4 is formed smaller than a groove width W1 of the shoulder circumferential groove 3 . The groove depth (not shown) of the crown circumferential groove 4 is preferably larger than the groove depth of the shoulder circumferential groove 3, for example. As a result, drainage is improved in the vicinity of the tire equator C, where the load and ground contact pressure act most, and wet braking performance and wet turning performance are improved.

FIG. 2 is an enlarged view of the shoulder land portion 5. As shown in FIG. As shown in FIG. 2 , a plurality of vertical sipes 7 are formed in the shoulder land portion 5 . The vertical sipes 7 are arranged, for example, in the tire circumferential direction. In addition, the vertical sipe 7 is not limited to such an aspect, and may, for example, extend continuously in the tire circumferential direction.

The angle α2 of the vertical sipe 7 with respect to the tire circumferential direction may be 10 degrees or less, and in the present embodiment, the angle α2 is 0 degrees. Such a vertical sipe 7 greatly suppresses a decrease in rigidity of the shoulder land portion 5 in the tire circumferential direction.

In the present embodiment, the vertical sipe 7 extends from the axially inner end 5i of the shoulder land portion 5 to the axially outer side of the tire at a distance La of 20% to 40% of the axial width Ws of the shoulder land portion 5. located in In other words, in the shoulder land portion 5 of the present embodiment, no lateral grooves are provided in a region exceeding 40% of the width Ws of the shoulder land portion 5 from the inner end 5i to the outside in the axial direction of the tire. is maintained. Although not particularly limited, the width Ws of the shoulder land portion 5 is desirably 15% or more, more desirably 20% or more, desirably 35% or less, and more desirably 30% or less of the tread width TW.

In this embodiment, the longitudinal sipes 7 connect axially outer ends 8e, 8e of the shoulder lateral grooves 8 that are adjacent to each other in the tire circumferential direction. As a result, the deformation of the vertical sipes 7 at the time of ground contact is transmitted to the shoulder lateral grooves 8, and the snow removal performance of the shoulder lateral grooves 8 is further enhanced.

The shoulder lateral groove 8 is connected to the shoulder circumferential groove 3, for example. As a result, the snow in the shoulder lateral grooves 8 can be discharged through the shoulder circumferential grooves 3 . Although the shoulder lateral groove 8 extends linearly in this embodiment, it is not limited to such an aspect.

The shoulder lateral grooves 8 are inclined with respect to the tire circumferential direction in this embodiment. The shoulder lateral grooves 8 and the outer lateral sipes 9 are preferably inclined in different directions with respect to the tire circumferential direction. As a result, an edge effect in the opposite direction to the tire circumferential direction acts, suppressing the one-way flow of the tire 1, thereby improving straight running stability performance.

The absolute value |θ1−θ2| of the difference between the angle θ1 of the shoulder lateral groove 8 with respect to the tire circumferential direction and the angle θ2 of each of the outer lateral sipes 9 with respect to the tire circumferential direction is preferably 5 degrees or more, more preferably 10 degrees or more. , preferably 25 degrees or less, more preferably 20 degrees or less. Since the absolute value of the difference |θ1−θ2| is 5 degrees or more, a large edge effect can be exhibited even at different slip angles during running. Since the absolute value of the difference |θ1-θ2| is 25 degrees or less, it is possible to effectively suppress the one-way flow of the tire 1 .

The angle θ1 of the shoulder lateral groove 8 is desirably 60 degrees or more, more desirably 70 degrees or more, less than 90 degrees, and desirably 80 degrees or less. Since the angle θ1 of the shoulder lateral groove 8 is 60 degrees or more, the shear force of the snow column can be increased. Since the angle θ1 of the shoulder lateral groove 8 is less than 90 degrees, the rigidity of the shoulder land portion 5 in the vicinity of the shoulder lateral groove 8 can be moderately reduced, and the snow removal performance of the shoulder lateral groove 8 can be improved.

The groove width W3 of the shoulder lateral groove 8 is, for example, desirably 5% or more, more desirably 7% or more, desirably 12% or less, and more desirably 10% or less of the width Ws of the shoulder land portion 5 .

In this embodiment, the outer lateral sipes 9 include wavy sipes 10 extending in a wavy shape and linear sipes 11 extending linearly in a tread plan view. Since the wavy sipes 10 mesh with the sipe wall surfaces during turning traveling, the shoulder land portions 5 are prevented from slipping and the apparent rigidity of the shoulder land portions 5 is increased. The linear sipe 11 can smoothly discharge water melted from snow within the sipe. In this specification, the wavy sipe 10 is, for example, one having a zigzag wavelength λ of 1.5 to 5.5 mm and a zigzag amplitude A of 0.5 to 2.5 mm. In this specification, the wave shape includes not only a sine wave shape consisting of only curved lines but also a zigzag shape including linear portions when viewed from the top of the tread. The term "linear shape" includes not only a straight line but also an arc with a radius of curvature of 200 mm or more when viewed from the top of the tread.

The axially outer end 10 e of the wavy sipe 10 is positioned axially inward of the axially inner end 11 i of the linear sipe 11 , for example. Thus, the wavy sipes 10 and the linear sipes 11 are arranged without overlapping in the tire circumferential direction. As a result, an excessive decrease in rigidity of the shoulder land portion 5 is suppressed.

In order to effectively exhibit the above action, the axial distance LC between the outer end 10e of the wavy sipe 10 and the inner end 11i of the linear sipe 11 is 4% of the width Ws of the shoulder land portion 5. More than 5% is desirable, 5% or more is more desirable, 8% or less is desirable, and 7% or less is still more desirable.

The axial length L1 of the wavy sipes 10 is preferably smaller than the axial length L2 of the linear sipes 11 . Such outer lateral sipes 9 reduce the chances of wear and chipping of the wavy sipes 10 during straight running, and are highly effective in increasing the traction of the straight sipes 11, resulting in wear resistance performance and straight running stability performance. improve. If the length L1 of the wavy sipe 10 is excessively smaller than the length L2 of the straight sipe 11, there is a possibility that the apparent rigidity of the shoulder land portion 5 during cornering cannot be increased. Therefore, the length L1 of the wavy sipe 10 is desirably 80% or more, more desirably 85% or more, desirably 98% or less, and further desirably 95% or less of the length L2 of the straight sipe 11.

In this embodiment, both the wavy sipes 10 and the linear sipes 11 are inclined in different directions with respect to the tire circumferential direction than the shoulder lateral grooves 8 . As a result, the effect of suppressing the one-way flow of the tire 1 is enhanced.

The angle θ2a of the wavy sipe 10 with respect to the tire circumferential direction is, for example, desirably 60 degrees or more, more desirably 65 degrees or more, desirably 80 degrees or less, and more desirably 75 degrees or less. The angle θ2a of the wavy sipe 10 is the angle of the line passing through the center of the zigzag vibration. For example, the linear sipe 11 preferably has an angle θ2b of 70 degrees or more, more preferably 80 degrees or more, with respect to the tire circumferential direction. Such a linear sipe 11 suppresses a large decrease in rigidity of the shoulder land portion 5 near the first tread end T1. The angle θ2b of the linear sipe 11 is 90 degrees in this embodiment.

The linear sipe 11 is connected to, for example, the first tread end T1. As a result, water melted from the snow in the linear sipe 11 can be discharged from the first tread end T1.

In the shoulder land portion 5, a plurality of inner lateral sipes 13 are arranged between shoulder lateral grooves 8, 8 adjacent in the tire circumferential direction. Three to six inner lateral sipes 13 are arranged between the shoulder lateral grooves 8,8. Each inner lateral sipe 13 extends wavy in this embodiment. The inner lateral sipe 13 may, for example, extend linearly.

The angle θ3 of each inner lateral sipe 13 with respect to the tire circumferential direction is desirably 60 degrees or more, more desirably 70 degrees or more, less than 90 degrees, and further desirably 80 degrees or less.

FIG. 3 is a plan view of the tread portion 2. FIG. As shown in FIG. 3 , the crown land portion 6 is divided into the shoulder circumferential groove 3 and the crown circumferential groove 4 and provided on both sides of the tire equator C in this embodiment. The crown land portion 6 is provided with, for example, a plurality of crown lateral grooves 15 extending in the tire axial direction and a plurality of crown sipes 16 arranged between the crown lateral grooves 15 adjacent in the tire circumferential direction.

The crown lateral groove 15 extends linearly, for example. The crown lateral groove 15 connects the crown circumferential groove 4 and the shoulder circumferential groove 3 . The crown lateral grooves 15 are inclined with respect to the tire circumferential direction in this embodiment. The crown lateral groove 15 and the shoulder lateral groove 8 are, for example, inclined in opposite directions to the tire circumferential direction. The crown lateral groove 15 is not limited to extending linearly.

Although not particularly limited, the angle θ4 of the crown lateral groove 15 with respect to the tire circumferential direction is desirably 60 degrees or more, more desirably 70 degrees or more, desirably less than 90 degrees, and further desirably 80 degrees or less.

Each crown sipe 16 extends in a wave shape. The crown sipe 16 is inclined with respect to the tire circumferential direction. Three to six crown sipes 16 are provided between adjacent crown lateral grooves 15, 15 in the tire circumferential direction. The crown sipe 16 is not limited to one extending in a wavy shape.

The angle θ5 of each crown sipe 16 with respect to the tire circumferential direction is desirably 60 degrees or more, more desirably 70 degrees or more, less than 90 degrees, and further desirably 80 degrees or less.

Each crown sipe 16 and each inner lateral sipe 13 are inclined in opposite directions to the tire circumferential direction. As a result, the one-way flow of the tire 1 is further suppressed.

Although the particularly preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to the illustrated embodiments, and can be modified in various ways.

[Appendix]
The present disclosure includes the following aspects.

[Present Disclosure 1]
A tire having a tread portion,
The tread portion is provided with a shoulder circumferential groove adjacent to a first tread end and a shoulder land portion located axially outside the shoulder circumferential groove,
The shoulder land portion includes a longitudinal sipe extending in the tire circumferential direction, a plurality of shoulder lateral grooves positioned inside the longitudinal sipe in the tire axial direction and extending in the tire axial direction, A plurality of outer lateral sipes located on the outer side are provided,
A lateral groove is not provided outside the longitudinal sipe of the shoulder land portion in the axial direction of the tire,
tire.
[Disclosure 2]
The tire according to the present disclosure 1, wherein the shoulder lateral grooves and each of the plurality of outer lateral sipes are inclined in different directions with respect to the tire circumferential direction.
[Disclosure 3]
The absolute value |θ1−θ2| of the difference between the angle θ1 of the shoulder lateral groove with respect to the tire circumferential direction and the angle θ2 of each of the plurality of outer lateral sipes with respect to the tire circumferential direction is 5 to 25 degrees. The tires described in .
[Disclosure 4]
The longitudinal sipes are positioned from the inner end of the shoulder land portion in the tire axial direction to the outer side in the tire axial direction at a distance of 20% to 40% of the width of the shoulder land portion in the tire axial direction. 4. The tire according to any one of 3.
[Disclosure 5]
5. The tire according to any one of the present disclosures 1 to 4, wherein the angle θ1 of the shoulder lateral groove is 60 degrees or more and less than 90 degrees.
[Disclosure 6]
The plurality of outer lateral sipes includes a wavy sipe extending in a wavy shape and a linear sipe extending linearly in a tread plan view,
6. The tire according to any one of the present disclosures 1 to 5, wherein an axially outer end of the wavy sipe is located axially inward of an axially inner end of the linear sipe.
[Present Disclosure 7]
A plurality of vertical sipes are formed in the shoulder land portion,
7. The tire according to any one of the present disclosures 1 to 6, wherein the longitudinal sipes connect axially outer ends of the shoulder lateral grooves that are adjacent in the tire circumferential direction.
[Disclosure 8]
The tread portion is provided with a crown land portion inside the shoulder circumferential groove in the tire axial direction,
The crown land portion is provided with a plurality of crown lateral grooves extending in the tire axial direction and a plurality of crown sipes arranged between the crown lateral grooves adjacent in the tire circumferential direction,
8. The tire according to any one of the present disclosures 1 to 7, wherein an angle of the plurality of crown sipes with respect to the tire circumferential direction is 60 degrees or more and less than 90 degrees.
[Disclosure 9]
In the shoulder land portion, a plurality of inner lateral sipes are arranged between the shoulder lateral grooves adjacent in the tire circumferential direction,
The angle of the plurality of inner lateral sipes with respect to the tire circumferential direction is 60 degrees or more and less than 90 degrees,
9. The tire according to the present disclosure 8, wherein the plurality of crown sipes and the plurality of inner lateral sipes are inclined in opposite directions with respect to the tire circumferential direction.
[Disclosure 10]
The tire according to the present disclosure 8 or 9, wherein the crown lateral grooves and the shoulder lateral grooves are inclined in opposite directions with respect to the tire circumferential direction.
[Present Disclosure 11]
The tread portion includes a crown circumferential groove arranged inside the shoulder circumferential groove in the tire axial direction,
The crown circumferential groove includes an inclined portion that is inclined with respect to the tire circumferential direction, and an axial portion that is connected to the inclined portion and extends in the tire axial direction,
11. The tire according to any one of the present disclosures 1 to 10, wherein the inclined portions and the axial portions are alternately arranged in a zigzag shape in the tire circumferential direction.
[Present Disclosure 12]
12. The tire according to the present disclosure 11, wherein the inclined portion has an angle of 5 to 30 degrees with respect to the tire circumferential direction.

REFERENCE SIGNS LIST 1 tire 2 tread portion 3 shoulder circumferential groove 5 shoulder land portion 7 vertical sipe 8 shoulder lateral groove 9 outer lateral sipe

Claims (12)

A tire having a tread portion,
The tread portion is provided with a shoulder circumferential groove adjacent to a first tread end and a shoulder land portion located axially outside the shoulder circumferential groove,
The shoulder land portion includes a longitudinal sipe extending in the tire circumferential direction, a plurality of shoulder lateral grooves positioned inside the longitudinal sipe in the tire axial direction and extending in the tire axial direction, A plurality of outer lateral sipes located on the outer side are provided,
A lateral groove is not provided outside the longitudinal sipe of the shoulder land portion in the axial direction of the tire,
tire. The tire according to claim 1, wherein the shoulder lateral grooves and each of the plurality of outer lateral sipes are inclined in different directions with respect to the tire circumferential direction. The absolute value |θ1−θ2| of the difference between the angle θ1 of the shoulder lateral groove with respect to the tire circumferential direction and the angle θ2 of each of the plurality of outer lateral sipes with respect to the tire circumferential direction is 5 to 25 degrees. The tire described in . The longitudinal sipe is located at a distance of 20% to 40% of the axial width of the shoulder land portion from the axially inner end of the shoulder land portion to the axially outer side of the tire. 4. The tire according to any one of 3. The tire according to any one of claims 1 to 4, wherein the angle θ1 of the shoulder lateral groove is 60 degrees or more and less than 90 degrees. The plurality of outer lateral sipes includes a wavy sipe extending in a wavy shape and a linear sipe extending linearly in a tread plan view,
The tire according to any one of claims 1 to 5, wherein the axially outer ends of the wavy sipes are located axially inward of the axially inner ends of the linear sipes. A plurality of vertical sipes are formed in the shoulder land portion,
The tire according to any one of claims 1 to 6, wherein the longitudinal sipe connects axially outer ends of the shoulder lateral grooves adjacent to each other in the tire circumferential direction. The tread portion is provided with a crown land portion inside the shoulder circumferential groove in the tire axial direction,
The crown land portion is provided with a plurality of crown lateral grooves extending in the tire axial direction and a plurality of crown sipes arranged between the crown lateral grooves adjacent in the tire circumferential direction,
The tire according to any one of claims 1 to 7, wherein an angle of the plurality of crown sipes with respect to the tire circumferential direction is 60 degrees or more and less than 90 degrees. In the shoulder land portion, a plurality of inner lateral sipes are arranged between the shoulder lateral grooves adjacent in the tire circumferential direction,
The angle of the plurality of inner lateral sipes with respect to the tire circumferential direction is 60 degrees or more and less than 90 degrees,
The tire according to claim 8, wherein the plurality of crown sipes and the plurality of inner lateral sipes are inclined in opposite directions with respect to the tire circumferential direction. The tire according to claim 8 or 9, wherein the crown lateral grooves and the shoulder lateral grooves are inclined in opposite directions with respect to the tire circumferential direction. The tread portion includes a crown circumferential groove arranged inside the shoulder circumferential groove in the tire axial direction,
The crown circumferential groove includes an inclined portion that is inclined with respect to the tire circumferential direction, and an axial portion that is connected to the inclined portion and extends in the tire axial direction,
The tire according to any one of claims 1 to 10, wherein the inclined portions and the axial portions are alternately arranged in a zigzag shape in the tire circumferential direction. The tire according to claim 11, wherein the inclined portion has an angle of 5 to 30 degrees with respect to the tire circumferential direction.

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