| 摘要 |
PROBLEM TO BE SOLVED: To improve overturning limit performance as excellent abrasion resistance performance is secured. SOLUTION: A chamfering part 7 formed by notching a cross part 9 between a block surface 81 and a block wall surface S2 fronting on a longitudinal main groove 3A is formed in a block 5A. The chamfering part 7 has width-increasing parts 7A and 7A having chamfering width W increased from two end parts 7E in the peripheral direction of a tire toward a central part in a peripheral direction. |
