PNEUMATIC TIRE

摘要

In the center region of a tread face of a pneumatic tire where one direction is specified as the direction of rotation, blocks each having obtuse-angled corner portions and acute-angled corner portions are divided and formed. The blocks are formed by at least one first circumferential groove provided at a side of the centerline of the tire and first transverse grooves. The first circumferential groove extends in a circumferential direction of the tire. T he first transverse grooves diagonally extend from the first circumferential groove in the direction opposite the rotational direction of the tire toward an outer side in a width direction of the tire and arranged at predetermined intervals in the circumferential direction of the tire. Groove wall-faces on both sides of one of the obtuse corners of each of the blocks, which obtuse- angled corner faces the first circumferential groove, are inclined such that the angles of inclination gradually become larger toward the obtuse-angled corner and maximum inclination angles are formed at the obtuse-angle corner.