| 摘要 |
A pneumatic tire (1) comprises an asymmetric tread pattern with a designated install direction to a vehicle having an outboard tread edges, the tread pattern having an outboard tread portion (2A) between the outboard tread edge (Teo) and a tire equator (C) and provided with an outer main groove (3A), the outer main groove (3A) having a cross section comprising a bottom (10) with a depth (D1) of 5.5 to 6.5 mm, and axially inner (11) and outer groove walls (12) each extending from the bottom (10) to a tread contact surface (2n), respectively, at least one of groove walls having a stepwise shape comprising a radially inner portion (13) extending from the bottom with a height (³) of 2.0 to 4.0 mm, an axially extending stepped portion (14) extending from the radially inner portion (13) with a length (²) of 0.75 to 1.25 mm, and a radially outer portion (15) between the stepped portion (14) and the tread contact surface (2n). |
