| 摘要 |
PROBLEM TO BE SOLVED: To effectively suppress an irregular wear of a land portion formed with a flask type sipe of a tire. SOLUTION: A substantially semispherical protruding portion 38 is formed on one opposed sipe wall surface of flask type sipe 40, and a substantially semispherical recess portion 36 engaged with the protruding portion 38 is formed on the other sipe wall surface. The protruding portions 38 and the recess portions 36 are alternately formed along a sipe longitudinal direction. Since small land portions 48 partitioned by the sipe 40 can be substantially uniformly deformed even if a deforming direction of a long portion 34 is altered, irregular wear scarcely occurs. At the time of braking or driving, a ground contact area is ensured, and high wet performance is obtained. |
