| 摘要 |
<p>A pneumatic tire comprising an improved tread has a tread composed of a rubber composition comprising from 10-120 parts by weight of carbon black having an iodine adsorption number of not less than 36 mg/g and a dibutyl phthalate adsorption number of not less than 60 ml/100 g; from 0.4 to 5 parts by weight of a vulcanizing agent; and 100 parts by weight of a rubber component consisting of from 40 - 100 parts by weight of a styrene-butadiene copolymer rubber and from 0 to 60 parts by weight of one or more diene rubbers other than said styrene-butadiene rubber which has a bound styrene content (S) of from 10 to 30% by weight and a 1,2-bond content in the butadiene portion (V) of from 40 to 70% by weight, such that 65</=1.7S+V</=100, and contains not more than 10% by weight, based on the weight of bound styrene, of styrene sequences consisting of not less than 11 styrene monomer units and not less than 80% by weight of, based on the weight of bound styrene, of styrene sequences consisting of not more than 5 styrene monomer units.</p> |
