Patent ID: 8846820

Claim:
A rubber composition comprising 10 to 180 parts by mass of silica per 100 parts by mass of a rubber component and 3 to 15 mass % of an activated silane compound based on silica, wherein the activated silane compound is obtained by reacting a hydrocarbyloxysilane compound with an organic metal compound in an organic solvent, and wherein the hydrocarbyloxysilane compound is at least one compound selected from the group consisting of bis(2-trimethoxysilylethyl) trisulfide, bis(3-triethoxysilylpropyl) disulfide, bis(2-triethoxysilylethyl) disulfide, bis(3-trimethoxypropyl) disulfide, bis(2-trimethoxysilylethyl) disulfide, bis(2-triethoxysilylethyl) trisulfide, and bis(3-trimethoxypropyl)trisulfide.