| 摘要 |
PROBLEM TO BE SOLVED: To prevent partial wear among blocks without deteriorating noise performance on a pneumatic tire having variable pitch arrangement. SOLUTION: This pneumatic tire having the block 3 formed of a plurality of main grooves 1 continued in the tire peripheral direction on a tread surface and a lateral groove 2 communicating the main grooves 1 to each other and communicating the main grooves 1 and a grounding edge 4 to each other and having a relatively large inclination against the normal direction of a tread surface of a main groove side wall surface of the block short in pitch length is constituted by forming block rows 3c, 3m, 3s in the peripheral direction divided by the main blocks 1 or the main blocks 1 and the grounding edge 4 by the blocks, constituting at least one of the block rows of a plurality of the blocks different in pitch length in the tire peripheral direction, making an inclination of the main groove side wall surface on which width of the blocks becomes wider toward a groove bottom and relatively decreasing an inclination against the normal direction of the tread surface of the main groove side wall surface of the block long in pitch length. |
