| 摘要 |
<p>A rubber composition in which rolling resistance can be reduced without lowering wet grip performance, and a tire using the same can be provided. A rubber composition comprising 15 to 150. parts by weight of silica having a nitrogen adsorbing-specific surface area of 20 to 500 m 2 /g, on the basis of 100 parts by weight of a rubber component comprising not less than 15 % by weight of a styrene-butadiene rubber (1) containing an styrene amount of not less than 33 % by weight and a vinyl amount of not less than 30 % by weight, and not less than 10 % by weight of a styrene-butadiene rubber (2) containing a styrene amount of not more than 15 % by weight and a vinyl amount of not more than 60 % by weight, wherein a total amount of the styrene-butadiene rubber (1) and the styrene-butadiene rubber (2) is not less than 60 % by weight.</p> |
