| 摘要 |
PURPOSE:To improve camber thrust at the time of escaping from a rutted road and to improve a rut resistance wandering property without causing lowering of belt durability by specifying a tread profile and a tread pattern. CONSTITUTION:A distance (a) from a shoulder edge of a main groove 7 positioned nearest to a shoulder side of the main grooves 7 on a tread radius R, a tread developed width TDW and a tread surface on the meridian section of a tire is to be in ranges of 1.20W<R<1.50W, 0.68W<TDW<0.78W, 0.17W<a<0.23W against a tire maximum width W respectively. Additionally, an angle alpha against a slope line of a tread surface of a groove wall of the shoulder side of the main groove 7 positioned nearest to the shoulder side and an angle beta against a slope line of a tread surface of a groove wall of the tread center side are to be related to each other in alpha<beta. |
