Sumitomo Rubber Industries Limited

Mahito Arai

Shotaro Abe

Hiroki Koike

Daniel Kunkel

Jaap Leendertse

Oliver Knispel

Masayuki Fujita

Masashi Wakasugi

Hiroyuki Ishino

Rena Onitsuka

Isao Sawakami

Suxiang Yuan

Yuan Suxiang

Hiroki Omura

A tire has a tread portion bound with an intended tire rotational direction. The tread portion includes a first tread edge and a second tread edge. The tread portion is provided with first oblique grooves extending obliquely toward a heel side in the tire rotational direction from the first tread edge toward a tire equator side, second oblique grooves extending obliquely toward the heel side from the second tread edge toward the tire equator side, and first circumferential grooves each connecting a respective pair of the first oblique grooves adjacent to each other in a tire circumferential direction. The first oblique grooves have the tire equator side end portions intersecting with the second oblique grooves. The second oblique grooves have the tire equator side end portions intersecting with the first oblique grooves. The first circumferential grooves have groove widths each increasing toward the heel side in the tire rotational direction.

Tire

Tire for automobile

The tire has a tread portion for which an intended tire rotational direction is specified. The tread portion comprises first inclined land portions defined between first inclined grooves. The first inclined land portion comprises an outer portion having a first wall surface and a second wall surface, and an inner portion having a third wall surface and a fourth wall surface. The angle θof the first wall surface is smaller than the angle θof the second wall surface, and the angle θof the third wall surface is larger than the angle θof the fourth wall surface.

A tire comprises a tread portion comprising three main grooves and four land portions. The main grooves are a first shoulder main groove, a second shoulder main groove and a crown main groove. The land portions include a first middle land portion between the first shoulder main groove and the crown main groove, a second middle land portion between the second shoulder main groove and the crown main groove. The first middle land portion is disposed so that the tire equator is positioned in the ground contact surface thereof. Each of the first middle land portion and the second middle land portion is provided with a plurality of narrow grooves so as to exhibit excellent steering stability and ride comfort.

A tire comprises a tread portion whose position when mounted on a vehicle is specified. The tread portion includes an inner crown land region defined between a crown main groove and an inner shoulder main groove. The inner crown land region includes crown lateral grooves, first inner crown sipes, second inner crown sipes each extending from the inner shoulder main groove toward the crown main groove and having an inner end terminating within the inner crown land region, and third inner crown sipes each extending from the crown main groove toward the inner shoulder main groove and having an outer end terminating within the inner crown land region. The crown lateral grooves each have a length in a tire axial direction larger than that of each of the second inner crown sipes.

A tire comprises a tread portion. The tread portioncomprises two crown land regionsand two shoulder land regionsdivided by a crown main grooveand a pair of shoulder main groovesandarranged one by one on each side of the crown main groove. Each of the two crown land regionsis provided with a plurality of sipeseach having a width less than 1.5 mm. The sipesof each of the two crown land regionsinclude only semi-open sipeseach having one end connected with one of the main grooves and the other end terminating within the land region. The sipesof the two crown land regionsare inclined in a same direction with respect to a tire axial direction.

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Kobe, Japan

Mahito Arai