| 摘要 |
PROBLEM TO BE SOLVED: To realize superior on-ice draining performance and wet performance. SOLUTION: One sipe 7 is composed of a stepping-in side part 7a and a stepping-out side part 7b. An angle formed by a tire equatorial surface C and the extending direction of the stepping-in side part 7a is set to an acute angle. An angle formed by the tire equatorial surface C and the extending direction of the stepping-out side part 7b is set larger than an angle formed by the tire equatorial surface C and the extending direction of the stepping-in side part 7a. In a land part 5, the stepping-in side part 7a of an adjacent sipe 7 is extended from an almost boundary position of the stepping-in side part 7a and the stepping-out side part 7b of the respective sipes 7 in order from the one sipe 7 positioned on the most stepping-in side. The extending directions of the stepping-in side part 7a and the stepping-out side part 7b of the mutual adjacent sipes are respectively set symmetrical to the tire equatorial surface C. |
