Patent ID: 8196626

Claim:
A tire comprising: a tread profile with sidewalls extending therefrom; a plurality of ribs extending on the tread profile and each rib including a first portion, a second portion, a first shoulder connected to the first portion and a second shoulder connected to the second portion, the first portion extending across the tread profile being next to a vehicle when the tire is mounted thereon, the first portion including a first section with a constant height, the first section having a length “L 1 ” extending from a centerline of the tire in an axial direction toward the first shoulder, the first shoulder being curved from the constant height first section toward the sidewall and the first shoulder being connected between the first section of the first portion and the sidewall of the tire by a first radius “R 1 ”; the second portion extending across the tread profile being further away from the vehicle when the tire is mounted thereon than the first portion, the second portion including a second section with a constant height, the second section having a length “L 2 ” extending from a centerline of the tire in an axial direction toward the second shoulder, the second shoulder being curved from the constant height second section toward the sidewall and the second shoulder being connected between the second section of the second portion and the sidewall of the tire by a second radius “R 2 ”, the first and second sections having the same height, and the ratio of the “L 1 ” to the “L 2 ” being 1.1 to 1.4, and the ratio of the “R 1 ” to “R 2 ” being 0.5 to 0.9.