| 摘要 |
PROBLEM TO BE SOLVED: To provide: a rubber composition for a tire, capable of improving fuel efficiency, abrasion resistance and breaking performance in good balance; and a pneumatic tire using this.SOLUTION: A rubber composition for a tire includes a rubber component and silica having an average primary particle diameter X (nm) and a nitrogen adsorption specific surface area Y (m/g), satisfying the following three formulae: Y≥370-9.0X; 5.0≤X≤40.0; 30≤Y≤500. |
