Patent ID: 8865814

Claim:
A rubber composition for a tread, comprising: a modified solution-polymerized styrene-butadiene rubber, a non-modified styrene-butadiene rubber, carbon black, silica, and polyethylene glycol, the modified solution-polymerized styrene-butadiene rubber being one modified with a compound represented by the following formula (1): wherein, in formula (1), R 1 , R 2 , and R 3 are the same as or different from one another, and each represents an alkyl, alkoxy, silyloxy, acetal, carboxyl or mercapto group, or a derivative thereof; R 4 and R 5 are the same as or different from each other, and each represents a hydrogen atom or an alkyl group; and the symbol n represents an integer; and wherein a rubber component of the rubber composition contains 60 mass % or more of the modified solution-polymerized styrene-butadiene rubber based on 100 mass % of the rubber component, and the rubber composition comprises, per 100 parts by mass of the rubber component, 10 parts by mass or less of the carbon black, 50 parts by mass or more of the silica, and 0.1 to 3.5 parts by mass of the polyethylene glycol.