| 摘要 |
PROBLEM TO BE SOLVED: To improve on-ice brake performance and maneuvering stability on an ice-snow road in a well-balanced state.SOLUTION: A shoulder lateral groove 4 for forming a shoulder block row 5R comprises an inside groove part 4i and an outside groove part 4o wider than that. A shoulder block 5 is partitioned into an inside block part 5i and an outside block part 5o by a longitudinal sipe 21. The longitudinal sipe 21 comprises a shallow bottom part 22 on circumferential directional both end sides and the central side. In a lateral sipe 23 arranged in the inside block part 5i and the outside block part 5o, an interval Pa between the lateral sipes 23 is smaller than an interval Pb between the lateral sipe 23 and the shoulder lateral groove 4.SELECTED DRAWING: Figure 1 |
