The Yokohama Rubber Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Kenichiro Endo

Masahiro Ebiko

Yukio Kuroda

Izumi Kuramochi

Takeshi Masatomo

Mitsutoshi Saeki

Yoshimasa Hashimoto

Hirohisa Hazama

Kenichi Sato

Hiroshi Furusawa

Seiji Iga

Hiroshi Tokizaki

Hiroyuki Kojima

Jun Matsuda

Yoshiaki Hashimura

Takumi Morito

Yuji Kodama

Masaaki Nagayasu

Masataka Koishi

Takeshi Kaneko

Yuji Tomatsu

Kenichiro Sugitani

Yukihiko Ohki

Tomonori Sakai

Kensuke Saitou

Koji Watanabe

Kenji Yamane

Tsuyoshi Kitazaki

Ryoji Hanada

Hideki Seto

Riichiro Mama

Masaya Mita

Masahiro Iida

Kensuke Saito

A circumferential direction protrusion is provided extending longitudinally mainly along a tire circumferential direction on a side outward in a tire radial direction from a maximum tire width position on at least a first tire side portion of a tire.

Pneumatic tire

A tire-wheel assembly comprises a wheel coupled to a rotating shaft; an elastic tube disposed on an outer side of the wheel with respect to a radial direction, the interior of the tube being filled with air; a rigid protective ring disposed on an outer side of the tube with respect to the radial direction separated from the wheel; and a tread ring disposed on an outer side of the protective ring with respect to the radial direction, an inner circumferential surface of the tread ring contacting an outer circumferential surface of the protective ring.

Tire/wheel assembly and tread ring

Automobile tire

A pneumatic tire includes a plurality of circumferential grooves and a first land portion. The circumferential grooves extend continuously in a tire circumferential direction. The first land portion extends in the tire circumferential direction between a pattern end and one of the circumferential grooves in a shoulder region located outside the circumferential grooves in a tire width direction. The first land portion has first lug grooves extending from the pattern end in the tire width direction and closed without communicating with the circumferential grooves are arranged in the tire circumferential direction. At least one circumferential groove is wave-shaped with a constant groove width in the tire width direction at a tread surface and formed in a wave shape in the circumferential direction at the tread surface and groove bottom. The wave-shaped circumferential groove has a shorter cycle length of waves at the groove bottom than at the tread surface.

Pneumatic tire with tread having wave shaped circumferential groove

Automobile tire tread

A non-pneumatic tire includes a spoke structure that can be easily mounted on a rim of a wheel. Durability is improved by suppressing the buckling of a spoke structure. A non-pneumatic tire includes a spoke structure () and a tread ring (). The spoke structure () includes a cylindrical outer member () and a cylindrical inner member () which are concentrically arranged, and which are connected to each other with a plurality of fins (') arranged at intervals in the circumferential direction. The tread ring () fits onto the outer periphery of the spoke structure (). The spoke structure () is divided in the tire circumferential direction into at least two circumferential-direction separate structures ().

Non-pneumatic tire

Tire tread for an automobile tire

Growing community of inventors

Tokyo, Japan

Kenichiro Endo