| abstract |
A rubber composition for cap tread satisfying both of low heat build-up property and fracture strength and a tire having cap tread using the same are provided. A rubber composition for cap tread including 0.5 to 10 parts by mass of an alkylphenol-sulfur chloride condensate (B) indicated by the formula (B1):n n(wherein R 1 to R 3 are same or different, either is an alkyl group having 5 to 12 carbons; x and y are same or different, and either is an integer of 2 to 4; n is an integer of 0 to 10.), 0 to 0.45 parts by mass of sulfur (C), and 10 to 100 parts by mass of silica (D), based on 100 parts by mass of a specific rubber component (A). |