Patent ID: 8183327

Claim:
A rubber composition for a tire, which does not contain either soluble sulfur or insoluble sulfur, and which comprises diene rubber, 2 to 15 parts by mass of compound 1 represented by formula (1) and 0.4 to 5 parts by mass of compound 2 represented by formula (2), per 100 parts by mass of the diene rubber, wherein an amount ratio of the compound 1 to the compound 2 (compound 1/compound 2) is 2 to 8; wherein R 1 to R 4 are the same as or different from one another, and represent a C 1-20 alkyl group, a C 6-20 aryl group, or a C 7-20 aralkyl group, and n represents an integer of 1 to 12; wherein R 5 to R 7 are the same as or different from one another, and represent a C 5-12 alkyl group, x and y are the same as or different from each other, and represent an integer of 2 to 4, and m represents an integer of 0 to 10.