PNEUMATIC TIRE

摘要

A tread surface, the tire rotational direction of which is specified in one direction, has a center region. Blocks having obtuse-angled corner portions and acute-angled corner portions are defined in the center region by at least one first circumferential groove extending in a circumferential direction of the tire on one side of the tire centerline, and first lateral grooves which extend outwardly in a widthwise direction of the tire from the first circumferential groove so as to incline towards a direction of reverse rotation of the tire and are disposed at predetermined intervals in the tire circumferential direction. Groove wall surfaces located on both sides of the obtuse-angled corner portion of each block facing to the first circumferential groove are inclined such that the inclination angles thereof are gradually greater towards the obtuse-angled corner portion and are maximum at the obtuse-angled corner portion.