Toyo Tire Rubber Co., Ltd.

Toyo Tire Corporation

Jiro Taniguchi

Tetsuji Miyazaki

Shingo Kuwano

Toshikazu Yasunaga

Yoshiki Sato

A pneumatic tire according to the embodiment includes a land portionprovided on a tread portion, a plurality of sipesprovided on the land portion, and at least one concave portiondisposed between two adjacent sipes. Each of the sipeshas, at parts in a sipe longitudinal direction, bottom protrusionsprotruding from a bottom surface of the sipetoward a tread surface. The concave portionis provided close to the bottom protrusions

Pneumatic tire

In a pneumatic tire which is formed with plural shallow groovesand plural recessesin a tread and in which the plural shallow groovesextend in parallel, the plural shallow groovesform a saw teeth shape as a cross-sectional shape of the tread in a direction orthogonal to an extending direction of the shallow grooves, portions corresponding to apexes of the saw teeth shape are formed as edges, and the recessis formed between the two edges

A pneumatic tire includes: a plurality of shoulder blocks that are provided in a side portion, defined by a shoulder main groove extending in a tire circumferential direction and a shoulder lateral groove extending in a tire width direction, and disposed side by side in the tire circumferential direction; a rib that is provided in the side portion, and extends in the tire circumferential direction along the shoulder blocks; and a projection that is provided in the side portion, and extends from the rib toward the shoulder blocks.

Groove widths of center main grooves are larger than groove widths of inner and outer main grooves. Plurality of lateral grooves are formed at intervals in a tire circumferential direction so as to define inner shoulder blocks belonging to an inner shoulder row. A first raised portion connecting a pair of inner shoulder blocks to each other is formed in the lateral grooves every one other on an inner main groove side. A depth of the lateral groove in the first raised portion is smaller than the depth of the lateral groove in other portions. A second raised portion is formed on the outer main groove in a region defined by an imaginary line connecting an outer intermediate block and an outer shoulder block. A depth of the outer main groove in the second raised portion is smaller than that of the outer main groove in other portions.

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Itami, Japan

Jiro Taniguchi