| 摘要 |
PROBLEM TO BE SOLVED: To provide a studless tire capable of ensuring the traction performance on the ice-snow travel, and compatibly realizing the center feel property and the partial wear resistance at high level. SOLUTION: On a tread 10 of the studless tire, transverse grooves of block rows 2A, 2C adjacent to a main groove 1 are opened in the main groove 1, and constituted of a narrow groove portion 14 opened in the main groove 1 and not opened in the road surface in a ground contact state, and a wide groove portion 13 opened in circumferential grooves 1A, 1B opposite to the main groove 1 and opened in the road surface in a ground contact state. The narrow groove portion 14 comprises a deep bottom groove part 15 of the same depth as the wide groove portion 13, and a shallow bottom groove portion 16 shallower than the deep bottom groove part 15. COPYRIGHT: (C)2010,JPO&INPIT |
