Pneumatic tire with tread having first lug grooves and first, second and third inclined grooves

摘要

A tread pattern of a pneumatic tire includes: first inclined grooves having positions located separated from a center line as starting ends and extending in a first direction of the tire circumferential direction; first lug grooves extending from respective ends on the outer side in the tire width direction of the first inclined grooves in the first direction of the tire circumferential direction, and having an angle formed with the tire width direction smaller than an angle formed with tire width direction of the first inclined grooves; second inclined grooves extending from the respective ends on the outer side in the tire width direction of the first inclined grooves in the first direction of the tire circumferential direction; and third inclined grooves extending from respective intermediate points on the first lug grooves in the first direction of the tire circumferential direction.

主权项

1. A pneumatic tire having a tread pattern formed in each of half tread regions of a tread portion, the half tread regions being located on both sides in a tire width direction with a tire center line as a boundary, the pneumatic tire comprising:
in each of the half tread regions, a first inclined groove group having a plurality of first inclined grooves provided in a tire circumferential direction, the first inclined grooves each having a position located separated from the center line as a starting end, extending in a first direction of the tire circumferential direction as well as at an inclination towards an outer side in the tire width direction; a first lug groove group having a plurality of first lug grooves provided in the tire circumferential direction, the first lug grooves extending from respective end portions on the outer side in the tire width direction of the first inclined grooves in the first direction of the tire circumferential direction as well as at an inclination towards the outer side in the tire width direction as far as a ground contact edge, and having an angle formed with the tire width direction smaller than an angle formed with the tire width direction of the first inclined grooves; a second inclined groove group having a plurality of second inclined grooves provided in the tire circumferential direction, the second inclined grooves extending from respective end portions on the outer side in the tire width direction of the first inclined grooves in the first direction of the tire circumferential direction as well as at an inclination towards an inner side in the tire width direction; and a third inclined groove group having a plurality of third inclined grooves provided in the tire circumferential direction, the third inclined grooves extending from respective intermediate points on the first lug grooves in the first direction of the tire circumferential direction as well as at an inclination towards the outer side in the tire width direction, and having an angle formed with the tire width direction larger than the angle formed with the tire width direction of the first lug grooves, each third inclined groove being closed without reaching another first lug groove located adjacent to each first lug groove in the first direction.