Patent ID: 7652096

Claim:
A rubber composition for a tire tread comprising (i) 100 parts by weight of a diene-based rubber having an average glass transition temperature Tg of −50° C. to −10° C. and wherein said diene-based rubber is at least one member selected from the group consisting of polybutadiene rubber (BR) and styrene-butadiene copolymer rubber (SBR) and (ii) 5 to 150 parts by weight of carbon black having a nitrogen adsorption specific area N 2 SA (m 2 /g) of 80 to 150 and a dibutyl phthalate absorption DBPA in the range of 30 to 80 (ml/100 g) and satisfying a relationship between a tinting strength TINT (%) and a dibutyl phthalate absorption DPBA (ml/100 g) of TINT %>1.5 DPBA (ml/100 g) and (iii) 0 to 145 parts by weight of any other optional filler.