Sumitomo Rubber Industries Limited

Mitsushige Idei

Kazuo Asano

Akio Yamamoto

Yoshihide Kojima

Kenji Tagashira

Fumikazu Yamashita

Masahiro Oku

Tomoko Ookimoto

A radial motorcycle tire comprises a tread portion with a pair of tread edges, a pair of sidewall portions, a pair of bead portions each with a bead core therein, and a band disposed in the tread portion and composed of windings of at least one cord wound at an angle of not more than 5 degrees with respect to the tire equator. The tread portion is provided radially inside the band with at least two layers of cords comprising a radially outermost first layer and a radially inner second layer next to the first layer, wherein with respect to the tire equator, the cords of the first layer are inclined to a direction at an angle of from 65 to 90 degrees, and the cords of the second layer are inclined to the same direction as the first layer at an angle of from 65 to 90 degrees.

Motorcycle tire

Pneumatic tire for passenger cars having specified harshness factor

A radial tire which mitigates reactions when running across protrusions to thereby avoid damage to the vehicle. The tire prevents rim touch, an indirect contact of the inner face of the tread portion with a flange of the rim or a direct contact of the tread portion with the bead portion. The tire has sidewall portions which are bulged-out to satisfy certain equations. An increase in sidewall thickness and carcass rigidity is avoided with the radial tire.

Radial tire

Automobile tire

A radial tire comprises a carcass, a tread thereon, a breaker therebetween, bead cores, and rubber bead apexes, and is characterized in that:

Radial tire profile

Growing community of inventors

Kobe, Japan

Mitsushige Idei