| 摘要 |
PURPOSE: To improve the ice travel performance, snow travel performance, and abrasion resistance. CONSTITUTION: A tread face 2A is divided into multiple blocks 5 to form a block pattern, and the ratio S1/S is set to 0.60-0.65, where S is the total ground area of the ground region K of the tread face 2A, and S1 is the block ground area sum of the blocks in the tread face 2A. The JISA hardness of tread rubber 6 is set to 58-64 deg., and the block rigidity in the peripheral direction for the load applied in the peripheral direction on the tread face 2A is set to 45-55kg/mm. |
