| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire having a block pattern and capable of reducing noises without impairing steering stability. SOLUTION: A block pattern of multiple block trains constituted of multiple main grooves 2, 3, 4 extended in the tire peripheral direction and many horizontal grooves 5, 6 crossing the main grooves 2, 3, 4 is formed on a tread 1. The average angle between the main grooves 2 and horizontal grooves 6 dividing the blocks 8 of the block trains S, S located at both shoulder sections is set to 75-90 deg., and the acute angles between the main grooves 2, 3, 4 and the horizontal grooves 5 dividing the blocks 7 of the block train C located on the inside of the block trains S, S of both shoulder sections are set to 30-50 deg.C. The blocks 7 are formed into a shape that the bottom sides of two right triangles X, Y are integrally connected or a shape that the bottom sides of two right triangles X, Y are overlapped and the overlapped portions Z are integrally connected to form a virtual parallelogram. |
