| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire in which the level of the organ pipe resonance is reduced. SOLUTION: A large volume long hole 11 and a small volume long hole 11 are formed in one side wall 10a of a main groove 1 and the other side wall 10b, respectively. The width w1 and the depth d1 of the large volume long hole 11 are at least≥0.4 mm, and >0.05time and <0.25 time the width W of the main groove 1. The spacing p1 of the large volume long holes 11 is at least≥0.8 mm, and >0.2 time and <1.0 time the width W. The width w2 and the depth d2 of the small volume long hole 12 are at least≥0.2 mm, and >0.01time and <0.05 time the width W. The spacing p2 of the small volume long holes 11 is at least≥0.4 mm, and >0.04 time and <0.2 time the width W. The height h in the depth direction of the main groove 1 of the long holes 11, 12 is 50-80% of the depth D of the main groove 1. COPYRIGHT: (C)2009,JPO&INPIT |
