| abstract |
[PROBLEMS] To provide a rubber composition capable of improving wear resistance performance and fuel economy performance in a well-balanced manner, and a pneumatic tire using the same. A first styrene butadiene rubber having a weight average molecular weight of 1,000,000 or more, a second styrene butadiene rubber having a weight average molecular weight of 100,000 to 400,000, and a butadiene rubber having a weight average molecular weight of 400,000 to 1,000,000 A rubber composition for a tire, comprising: a rubber component containing: silica; a mercapto silane coupling agent; a sulfenamide vulcanization accelerator; a guanidine vulcanization accelerator; and a thiazole vulcanization accelerator About. 【Selection chart】 None |