Method of manufacturing a pneumatic tire.

摘要

A method of manufacturing a pneumatic tire having at least one of a group of two or more kinds of island-like blocks (26) having mutually different circumferential dimensions and a group of two or more kinds of blocks (24) which are each defined by adjacent lug grooves (20) of a plurality of lug grooves arranged in a circumferential row and have mutually different circumferential dimensions, wherein a slit (30) for lowering rigidity is formed in at least one of each of the island-like blocks (26A) whose circumferential dimensions are relatively large among the island-like blocks and each of the blocks whose circumferential dimensions are relatively large among the blocks defined by the adjacent lug grooves. Hence, the rigidity of large blocks is lowered, and the difference in rigidity between the large blocks and the small blocks is reduced so as to improve the uniformity of the tire.