| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire improving steering stability without deteriorating noise performance. SOLUTION: In the pneumatic tire, a center main groove 12 lying on a tire equator CL and extending in a tire circumferential direction is disposed in a tread section 1. A central portion 1A including the center main groove 12 in the tread section 1, and outer portions 1B lying on both outer sides of the central portion are formed of different rubber compositions. The hardness of the central portion 1A is higher than the hardness of the outer portions 1B. A width X of the central portion 1A is in the range of 10-35% of a ground contact width TCW of the tread section 1. COPYRIGHT: (C)2011,JPO&INPIT |
