| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of improving ice road performance by suppressing excessive fall of a land portion, and securing toe-and-heel wear proofing performance. SOLUTION: A pneumatic tire has a sipe 10 formed in a block 1 of a tread surface. The sipe 10 has a wide region 10A in which a sipe width is made larger than a tread at a position with a distance from the tread. The wide region 10A is constructed by alternately providing a concave groove 4 extending in a depth direction of the sipe 10 in both sides of sipe wall surfaces 10a, 10b along a longitudinal direction of the sipe 10. COPYRIGHT: (C)2011,JPO&INPIT |
