| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of preventing the occurrence of partial abrasion mainly taking place at its shoulders. SOLUTION: This pneumatic tire is provided with at least four main grooves extended in the circumferential direction of tire at its tread part, and a plurality of rids 7a through 7c are devidedly formed the main grooves. In this case, the radius R1 of a circular arc passing through the outer side edges Eo of the respective ribs 7a through 7b and the center point O of the tread, is made larger than the radius R2 of a circular arc passing through the inner side edges Ei of the respective ribs 7a through 7c and the center point O of the tread. |
