| 摘要 |
PROBLEM TO BE SOLVED: To provide a stud-less tire capable of enhancing performance on ice and snow in a new product. SOLUTION: In a stud-less tire in which many blocks 4 are formed with a plurality of main grooves 2 extending in the tire circumferential direction and a plurality of sub-grooves 3 crossing to the main grooves 2 in a tread 1, surface shapes projected in the tire circumferential direction of the blocks 4, 4 adjacent each other in the tire circumferential direction are made different, the step difference is formed between the adjacent blocks 4, 4, and the maximum step difference height h1 is made 0.5-1.5 mm. The block 4 is divided into a plurality of small blocks 6 with at least one siping 5, the surface shapes projected in the tire circumferential direction of the small blocks 6, 6 adjacent each other in the tire circumferential direction are made different within the block 4, the step difference is formed between the adjacent small blocks 6, 6, and the maximum step difference height h2 is made 0.5-1.5 mm. |
