| 摘要 |
A pneumatic tire comprises a tread portion with crown main grooves (3) having groove widths of 2.0-8.0 mm and groove depths of 15.0-20.0 mm, shoulder main grooves (4) having groove widths of from 8.0-14.0 mm and groove depths of from 15.0-20.0 mm and lateral narrow grooves (8) with groove widths of 0.6-2.0 mm and groove depths of 15.0-20.0 mm, wherein each main groove (3, 4) has a cross section including a groove bottom and groove walls, each groove wall includes an radially inner part (11) and an radially outer part (12), the inner part has an inclination of not more than 1 degree with respect to a groove centerline, and the outer part has an inclination larger than that of the inner part. |
