| 摘要 |
PURPOSE:To enhance the wet performance especially at the time of empty car by forming multiple land parts with 3 or more main grooves provided in a staggered form in the circumferential direction of a tread part, and changing the shearing resistance according to the place by means of providing notches that are opened to the main grooves in the staggered form in the land part excluding the land parts positioning in both utmost outside areas. CONSTITUTION:The captioned tire is provided with the body reinforcement using belt constituted from at least 2 layers of rubber coated layers. And, four main grooves 1 in the staggered form are formed in the circumferential direction of the tire at a tread part whose crown part to reinforce the body is externally wrapped by a rubber casing including this body reinforcement, and 5 land parts S(S1-S4) are separately formed by these main grooves 1. In this instance, notches 2 respectively opened to the main grooves 1 are provided in the staggered form in other land parts S2-S4 excluding a pair of land parts S1, S1 in both utmost outer areas of the tread part, so that the shearing resistance as the whole land part of the tread part in the circumferential direction and the axial direction becomes smaller against the land part S3 that is near to the center by the notches 2. |
