| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire allowing uneven wear generated around a main groove to be effectively suppressed even when the width of the main groove is narrowed due to a change in tread radius in the case of inflation. SOLUTION: In the pneumatic tire, a tread surface 1a is provided with the plural main grooves 7a and 7b extended in the circumferential direction of the tire. In the main groove 7b having a zigzag shape with amplitude in the width direction of the tire and having its width narrowed in the case of the inflation, the inclination angleβ1 of a groove wall W2 to a shoulder is made greater than thatα1 of a groove wall W1 to a center in a bent part to the shoulder, and the inclination angleα3 of the groove wall W1 is made greater than thatβ3 of the groove wall W2 in the bent part to the center for the purpose of discontinuously disposing rigidity adjusting parts 9, wherein the inclination angles of the mutually facing groove walls W1 and W2 are different from each other, in the circumferential direction of the tire. |
