| 摘要 |
PROBLEM TO BE SOLVED: To suppress degradation of the pattern rigidity, to maintain high biased-wear resistant performance and turning performance while demonstrating the orientation effect of short fibers contained in a tread rubber in the thickness direction and providing the excellent on-ice performance. SOLUTION: A short fiber blended rubber 10 is used for the tread rubber G. A small siping group 12 comprising sipings 11 of the length L1 of 2-10 mm in which both ends of sipings are broken off in a land section R is provided on the land section R comprising a block or a rib. The small siping group 12 includes a circumferential array part 13 with a plurality of small sipings 11 arranged in the circumferential direction, or a linear array part 14 with a plurality of small sipings are arranged in an intermittent manner on one line.
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