RUBBER COMPOSITION AND TIRE WITH TREAD FOR LOW TEMPERATURE PERFORMANCE AND WET TRACTION

A rubber composition for use in a tire tread is disclosed. The rubber composition comprises, based on parts by weight per 100 parts by weight elastomer (phr): (A) 100 phr of conjugated diene-based elastomers comprising: (1) of from 50 phr to 10 phr of a cis 1,4-polybutadiene rubber having a Tg in a range of from -90°C to -110°C and an isomeric cis 1,4-content of at least 95 percent; (2) of from 50 to 90 phr of styrene/butadiene elastomer having a Tg in a range of from -65°C to -55°C; (B) 100 to 200 phr of a rubber reinforcing filler comprising carbon black and silica together with a silica coupling agent for the silica having a moiety reactive with hydroxyl groups on the silica and another different moiety interactive with the diene-based elastomers; and (C) of from 30 to 70 phr of a traction promoting resin having a softening point (Sp) in a range of from 110°C to 170°C comprising at least one of a styrene-alphamethylstyrene copolymer resin having a softening point in a range of from 110°C to 130°C, a terpene-phenol resin having a softening point in a range of from 120°C to 170°C, one or more coumarone-indene resins having a softening point in a range of from 110°C to 170°C, one or more petroleum hydrocarbon resins having a softening point in a range of from 110°C to 170°C, one or more terpene polymer resins having a softening point in a range of from 110°C to 170°C and one or more rosin derived resins and copolymers and copolymers having a softening point in a range of from 110°C to 170°C.