| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of restraining a performance change after wearing. SOLUTION: Sipes 20-30 are formed on a central part in the tire peripheral direction of a block 18. The sipes 20-30 are furnished with rectilinear parts 20A-30A respectively extending in the tire radial direction on the sipe bottom sides and are furnished with inclined parts 20B-30B inclined in the tire radial direction on the tire tread part sides. Additionally, the rectilinear parts 20A-30A are connected to each other in a straight line in the tire cross direction. The inclined parts 20B, 24B, 28B and the inclined parts 22B, 26B, 30B are inclined in the opposite directions with each other. The sipes 20-30 gradually approach each other adjacent fellows in accordance with advancement of wearing, and it is possible to restrain increase of rigidity of the block 18. Consequently, it is possible to restrain a change of performance such as the lowering of a braking distance on a wet road surface after wearing.</p> |
