Pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorsKeita KURODA, Yosuke MATSUDA, Hiroaki NINOMIYA
Life of this patent
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Abstract
A pneumatic tire has a tread portion provided with two crown main groove and two shoulder main grooves and divided into a center land zone, two middle land zones and two shoulder land zones. The middle land zone is provided with middle auxiliary grooves. The shoulder land zone is provided with shoulder axial grooves. The width of the shoulder axial groove at the axially outer end is more than the width of the shoulder axial groove at the axially inner end. Through the shoulder main groove, the shoulder axial grooves are continued to the respective middle auxiliary grooves.
Claims17
A pneumatic tire comprising
- a tread portion provided on each side of the tire equator with a crown main groove and a shoulder main groove extending continuously in the tire circumferential direction, so that the tread portion is axially divided into a center land zone between the crown main grooves, a pair of middle land zones between the crown main grooves and the shoulder main grooves, and a pair of shoulder land zones axially outside the shoulder main grooves, wherein
- the middle land zones are each provided with a plurality of middle auxiliary grooves extending axially inwardly from the shoulder main groove and terminating within the middle land zone,
- the shoulder land zones are each provided with a plurality of shoulder axial grooves extending axially outwardly from the shoulder main groove,
- the width of the shoulder axial groove measured at the axially outer end is larger than the width of the shoulder axial groove measured at the axially inner end, and
- the axially inner ends of the shoulder axial grooves are respectively overlapped with the axially outer ends of the middle auxiliary grooves at least partially in the tire circumferential direction.
Dependencies are inferred from the claim text.