| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire improved in a pattern noise caused by contact between a tread surface and a road surface. SOLUTION: A circumferential main groove 2Y extended in the tread surface 1 in a tire circumferential direction T at an angle of not more than 20°to the tire circumferential direction T is configured to have a main groove part Y1 and a plurality of branched groove parts Y2 branched and extended from the main groove part Y1. COPYRIGHT: (C)2005,JPO&NCIPI |
