RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE USING THE SAME

A rubber composition for a tire tread is disclosed, which provides a tire excellent in wet grip performance at low temperatures and wet grip performance at high temperatures. The rubber composition for a tire tread includes, per 100 parts by mass of diene-based rubbers including (a) 30 to 50 parts by mass of a styrene butadiene rubber having a glass transition point of −35° C. or more, (b) 20 to 40 parts by mass of a styrene butadiene rubber having a glass transition point of −45° C. or more and less than −35° C., and (c) 10 to 30 parts by mass of a styrene butadiene rubber having a glass transition point of −65° C. or more and less than −45° C.: 80 to 140 parts by mass of silica; and 15 to 50 parts by mass of a thermoplastic resin having a softening point of 40° C. or more.