Sumitomo Rubber Industries Limited

Mitsuhiro Nishino

Koichi Nakajima

Yoshifumi Kawagoe

A tire includes a tread portion including at least one circumferential groove extending continuously in a tire circumferential direction. The at least one circumferential groove includes a groove bottom having a plurality of protrusions projecting in a tire radial direction. Each of the plurality of protrusions has a longitudinally elongated shape with a width in a tire axial direction and a length in the tire circumferential direction that is greater than the width. Each of the plurality of protrusions includes a tapered portion whose width decreases in the tire circumferential direction.

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Kobe, Japan

Mitsuhiro Nishino