| 摘要 |
PURPOSE:To decrease the wear of railway of tires by arranging small holes for stress relaxation in the rib division along ridgelines and increasing the density at the protruded corner part and in the rib division. CONSTITUTION:A tire T has small holes 7 for stress relaxation, having the projection end 3' of the protruded corner part 3 of the rib 2 in the circumferential direction as a center, and said small holes 7 are arranged in parallel to the wall of the tread groove 1. At the protruded corner part 3, density is larger than the concaved corner part continuous to the protruded corner part, and also the density in the rib division is larger than the center part of the rib 2. Thus, the wear of tire railway is decreased. |
