| 摘要 |
PROBLEM TO BE SOLVED: To improve uneven wear resistance performance of a pneumatic tire while maintaining high on-ice performance thereof, the pneumatic tire having improved on-ice performance by densely arranging polygon blocks on a tread surface.SOLUTION: When one of two bending circumferential grooves 19 and 20 forming the polygon block 25 is called as a first side bending circumferential groove 20, and the other is called as a second side bending circumferential groove 19, a sidewall 25a of the polygon block 25 facing the first side bending circumferential groove 20 is inclined (α>0) with respect to a tire normal line m to such a direction that a distance between the sidewall 25a and the adjoining polygon block 25 with the first side bending circumferential groove 20 interposed between them becomes smaller toward a groove bottom 20a of the first side bending circumferential groove 20, and a groove width W20 of the first side bending groove 20 is made larger than a groove width W19 of the second side bending circumferential groove 19. |
