| 摘要 |
<p>A pneumatic tire comprises a tread portion, a carcass comprising a carcass ply of cords extending between bead cores in each bead portion, and a belt comprising a belt ply of belt cords arranged on the axially outward of the carcass, wherein the tread portion is provided with a center circumferential main groove extending on a tire equatorial plane, a pair of shoulder circumferential main grooves arranged on axial outside of the center circumferential main groove, center lateral grooves extending from the center circumferential main groove to the shoulder circumferential main grooves and shoulder lateral grooves extending from the shoulder circumferential main grooves to a tread edge, the center lateral grooves are inclined to the reverse direction of the belt cords of the outermost belt ply of the belt, groove width wyc of the center lateral grooves is from 1.0 to 6.0 mm, the shoulder lateral grooves are inclined to the same direction of the belt cords of the outermost belt ply, and the shoulder lateral groove comprises a narrow-width portion having a groove width wys1 of from 0.4 to 1.5 mm at a position where it connects to the shoulder circumferential main groove, and a wide-width portion having a groove width Wys2 of from 2.0 to 8.0 mm which is connected to the narrow-width portion and extends beyond the tread ground-contact edge.</p> |
