| 摘要 |
The present invention addresses the issue of providing: a tire rubber composition exhibiting excellent wet properties and excellent properties on ice and snow roads, when used in tires; and a pneumatic tire using the tire rubber composition. The tire rubber composition contains a diene rubber, silica, and a prescribed alkyltrialkoxysilane. The diene rubber includes a butadiene rubber and a prescribed conjugated diene rubber. The butadiene rubber content in the diene rubber is at least 20% by mass. The prescribed conjugated diene rubber content in the diene rubber is 30%-80% by mass. The average glass transition temperature of the diene rubber is -65 - -45°C. The prescribed conjugated diene rubber is a conjugated diene rubber produced using a prescribed production method and has an aromatic vinyl monomer content, a vinyl bond content, and a weight-average molecular weight that are within prescribed ranges. |
