Abstract: A method is disclosed for producing a tire rubber composition containing silica, a crosslinking compounding ingredient, and a rubber component containing 70 mass% to 100 mass% of a hydrogenated copolymer. The method includes hydrogenating an aromatic vinyl-conjugated diene copolymer, having a weight average molecular weight of 300,000 or more as measured by gel permeation chromatography, and having a hydrogenation rate of a conjugated diene moiety of 80 mol% or more. The method incudes: a first step of mixing 50 mass% to 95 mass% of 100 mass% of the hydrogenated copolymer with a total amount of the silica; a second step of mixing a rest of the hydrogenated copolymer with a mixture obtained in the first step; and a third step of mixing the crosslinking compounding ingredient with a mixture obtained in the second step.

Abstract: A pneumatic tire includes: a rubber member A containing a rubber component containing 70 mass % to 100 mass % of a hydrogenated copolymer, sulfur, and a triazine-thiol compound; and a rubber member B containing sulfur and a rubber component containing a diene rubber. The hydrogenated copolymer is obtained by hydrogenating an aromatic vinyl-conjugated diene copolymer, has a weight average molecular weight of 300,000 or more as measured by gel permeation chromatography, and has a hydrogenation rate of a conjugated diene moiety of 80 mol % or more, the rubber member A and the rubber member B are in contact with each other at an interface, and a content of the triazine-thiol compound is 0.1 parts by mass to 5 parts by mass with respect to 100 parts by mass of the rubber component in the rubber member A.

Abstract: A pneumatic tire includes a rubber member A containing a sulfur and a rubber component containing 70 to 100% by mass of a hydrogenated copolymer obtained by hydrogenating an aromatic vinyl-conjugated diene copolymer, the hydrogenated copolymer having a weight average molecular weight of 300,000 or more and having a hydrogenation ratio of a conjugated diene moiety of 80 mol % or more, and a rubber member B containing a rubber component containing a diene rubber and sulfur, in which the rubber member A and the rubber member B are in contact with each other, and the sulfur content of the rubber member A is 0.25 vol % or more, and the sulfur content of the rubber member B is 0.25 vol % or more, and the total content of the sulfur content of the rubber member A and the sulfur content of the rubber member B is 0.7 vol % or more.