| abstract |
A rubber composition and a tire comprising such a rubber composition is disclosed. The rubber composition comprises: from 75 to 85 phr of a styrene-butadiene rubber having a bound styrene content of from 30 to 50 percent by weight, a vinyl 1,2 content of from 10 to 30 percent by weight based on the rubber weight, and a Tg in a range of from -40ºC to - 20ºC; from 0 to 25 phr, alternatively from 5 phr to 15 phr, of natural rubber or synthetic polyisoprene; from 0 to 20 phr, alternatively from 5 phr to 15 phr, of cis-1,4 polybutadiene having a Tg in a range of from -110ºC to -90ºC; from 100 to 150 phr of silica; from 20 to 40 phr of a combination resin comprising a polyterpene resin, an alkylphenol formaldehyde resin, and a rosin acid; from 30 to 60 phr of oil; and from 5 to 25 phr of a sulfur containing organosilicon compound. |