RUBBER COMPOSITION FOR TIRE AND STUDLESS TIRE

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition for tires which enables production of studless tires excellent in both on-ice performance and wear resistance and a studless tire using the rubber composition.SOLUTION: A rubber composition for tires comprises 100 pts.mass of a diene rubber (A), 30-100 pts.mass of carbon black and/or a white filler (B), 0.3-30 pts.mass of a hardened product (C) obtained by hardening a crosslinkable oligomer or polymer (c1) incompatible with the diene rubber (A), and 0.1-12 pts.mass of a three-dimensionally crosslinked fine particle (D) of an average particle size of 0.5-50 μm. The hardened product (C) has a JIS A hardness of 3-30, and the fine particle (D) is present inside the hardened product (C).