RUBBER COMPOSITION AND USE THEREOF

摘要

The invention provides a rubber composition which can give tires excellent in braking performance and fuel consumption performance and which is excellent in mechanical strengths and fatigue resistance. Specifically, a rubber composition characterized by comprising (A) 60 to 0.1 parts by weight of a nonconjugated polyene copolymer consisting of a random copolymer which comprises 96 to 70 % by mole of structural units derived from an alpha-olefin (A1) and 4 to 30 % by mole of structural units derived from a nonconjugated polyene (A2) and has a glass transition temperature (Tg) of -25 to 20˚C, (B) 40 to 99.9 parts by weight of a diene rubber, and (C) at least one member selected from the group consisting of specified polymers and so on.