| abstract |
The present invention provides a rubber composition for tires that reduces the rolling resistance of pneumatic tires, and improves wet grip performance, on-snow performance, and processability above the existing levels. To 100 parts by mass of a rubber component containing 20 to 40 mass % of butadiene rubber and 80 to 60 mass % of other diene rubbers, a total of 45 to 65 mass parts of an aromatic modified terpene having a softening point of 100°C or higher is blended An olefin resin and an oil, the other diene-based rubbers include emulsion polymerized styrene-butadiene rubber E-SBR1 with a combined styrene content of 30 mass % or less and emulsion-polymerized styrene-butadiene rubber E-SBR2 with a combined styrene content of 35 mass % or more, the above E‑SBR1 accounts for 85 to 92 mass % of 100 mass % of the emulsion-polymerized styrene-butadiene rubber, and the ratio (WB) of the compounding amount (WB) of the above-mentioned butadiene rubber to the compounding amount (WT) of the above-mentioned aromatic modified terpene resin (WB) /WT) is 0.5 to 3.0. |