| 摘要 |
PROBLEM TO BE SOLVED: To provide a tread rubber composition having improved a low fuel cost, wet grip property and abrasion resistance.SOLUTION: A tread rubber composition contains a rubber constituent, silica and a silane coupling agent, and the content of a conjugated diene polymer obtained by reacting the formula (2) with a conjugated diene and a polymer having units of the formula (1) is 5 mass% or more. |
