tire

Abstract

Rigidity control of rib-shaped land areas with sipes. [Solution] The tire 10 has a tread portion 15 and a plurality of circumferential grooves 11, 12, 13 extending in the circumferential direction of the tire, a shoulder land portion provided on the tread portion 15, partitioned by the circumferential grooves 11, 12, 13 and located at the end in the width direction of the tire, a plurality of rib-shaped central land portions provided on the tread portion 15, partitioned by the circumferential grooves 11, 12, 13 and located between the shoulder land portions on both sides and extending in the circumferential direction of the tire, and central first sipes 31A, 32A that cross the central land portion, and a bent portion 35 is provided in the center of the length direction of the central first sipes 31A, 32A, having an amplitude in the width direction of the central first sipes 31A, 32A in the depth direction of the central first sipes 31A, 32A, and both ends of the length direction of the central first sipes 31A, 32A are general portions 36 without the bent portion 35.

Claims

1. Multiple circumferential grooves are provided in the tread portion and extend in the circumferential direction of the tire, The tread portion is provided, is partitioned by the circumferential groove, and has a shoulder portion located at the end in the tire width direction, The tread portion is provided, is partitioned by the circumferential groove, is located between the shoulder land portions on both sides, and comprises a plurality of rib-shaped central land portions extending in the circumferential direction of the tire, It has a central first sipe that crosses the central land area, A bent portion is provided in the central part of the central first sipe in the longitudinal direction, having an amplitude in the width direction of the central first sipe in the depth direction of the central first sipe. The tire is characterized in that both ends of the central first sipe in the longitudinal direction are general sections that do not have the bent portion.

2. The tire according to claim 1, having a central second sipe that traverses the central land portion and extends in a direction intersecting the central first sipe, and which does not have a bent portion.

3. The tire according to claim 1 or claim 2, wherein the difference in the circumferential position of the ends of adjacent central first sipes in the tire width direction that are close to each other in the tire width direction, and the difference in the circumferential position of the ends that are far from each other, is 0.28 to 1.16% of the circumferential length of the tread surface at the tire equator.

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