| 摘要 |
PROBLEM TO BE SOLVED: To improve both the noise control property and the wet property concurrently. SOLUTION: A tread surface T is divided imaginarily into the center areas Cr between the positions separating 25% of the grounding width W from a tire equator, and the tire equator C; the outer areas Sh between the positions separating 40% of the grounding width from the tire equator, and a tread edges E; and intermediate areas Md between the both areas. The tire furnishes the inner inclined grooves 2 which are extended from the inner ends 2i near the tire equator C inclining reversely each other to the tire peripheral direction, and whose outer ends 2e are positioned crossing the center areas Md. The inner inclined grooves 2 include the sharp inclined parts 2A positioning at the tire equator side, and having the angleθ1 made by the tire peripheral direction line being within the scope 5 to 15 deg.; and the gradual inclined parts 2B connecting to the ends of the sharp inclined parts 2A, and the angle made with the peripheral direction line N in the same direction is within the scope where the angle made with the peripheral direction line N in the same direction is larger than 15 deg., and smaller than 90 deg.. |
