RUBBER COMPOSITION AND PNEUMATIC TIRE

A rubber composition for use in a tread of a pneumatic tire is disclosed. The rubber composition comprises, based on 100 parts by weight of elastomer (phr), (A) from 40 to 90 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) in a range of from -65 °C to -55 °C; (B) from 60 to 10 phr of polybutadiene having a cis 1,4 content greater than 95 percent and a Tg in a range of from -80 °C to -110 °C; and (C) from 45 to 65 phr of a hydrocarbon resin having a Tg in a range of from -40 °C to 20°C; (D) less than 10 phr of oil; and (E) from 120 to 160 phr of silica; wherein the total amount of resin and oil is less than 70 phr, and wherein the weight ratio of silica to resin is greater than 2.