| 摘要 |
PROBLEM TO BE SOLVED: To concurrently improve the braking performance, accelerating performance and turning performance of a tire on an ice/snow road surface by forming primary sipes and secondary sipes adjacently and regularly in an expanded stride shape at opposite inclination angles to each other in the same block. SOLUTION: Blocks 2 arranged on a tire tread section 1 are constituted of block lines 2A, 2A of an intermediate region MA arranged in the tire peripheral direction on both sides across a central peripheral groove 4a in the intermediate region MA in the width direction of the tire tread section 1 and block lines 2B, 2B of shoulder regions SA located on both sides in the tire width direction. Primary sipes 3a and secondary sizes 3b extending in the tire width direction apart in the tire peripheral direction are formed adjacently and regularly in turn in an expanded stride shape at opposite inclination angles to each other in the same block in the blocks 2a of the block lines 2A and the blocks 2b of the block lines 2B. |
