Toyo Tire Corporation

Toyo Tire Rubber Co., Ltd.

Kensuke Shibayama

Hirokazu Sakata

Toshihiko Kanamura

Haruka Kubo

A pneumatic tire that is mounted on a vehicle in a specified direction and includes a tread rubber on a tread. The tread rubber has a plurality of main grooves extending along a tire circumferential direction, a pair of shoulder blocks that are defined by the main grooves and arranged on outer sides in a tire axial direction, and center blocks located between the pair of shoulder blocks. The center blocks are ribbed blocks that are continuous in the tire circumferential direction, and the tread rubber has a storage modulus at −25° C. (−25° C. E') of 60 MPa or more and 150 MPa or less.

Pneumatic tire

Automotive tire

Tire

A pneumatic tire is provided with a tread having a shoulder portion isolated by a main groove, and a slit formed on the shoulder portion, wherein a first tapered portion is formed on a side wall of the slit which comes into contact with the ground first when the tire is rotating, and a second tapered portion is formed on the side wall of the slit which comes into contact with the ground later, an end of the first tapered portion on the main groove side is located at a position closer to the main groove than the end of the second tapered portion on the main groove side, and the second tapered portion is formed so that a width on an opening end of the slit opening at a contact surface is wider than the width of the portion where the second tapered portion is not formed.

Pneumatic tire with chamfered lateral shoulder groove

A pneumatic tire is disclosed. In one sidewall part, a sidewall rubber is formed by a black rubber over the whole circumference in a tire circumferential direction. In the other sidewall part, a different color rubber part for indicating marks on a tire outer surface is provided. The different color rubber part is divided into several sections in the circumferential direction, and the different color rubber part and the black rubber part are alternately and adjacently arranged in the circumferential direction. Side surfaces at both sides in the circumferential direction of the different color rubber part are formed into inclined surface shapes in a direction such that the side surfaces approach each other toward a tire inner surface side, thereby a size in the circumferential direction of the different color rubber part is decreased toward the tire inner surface side.

Growing community of inventors

Itami, Japan

Kensuke Shibayama