Tire with silica reinforced tread

摘要

The invention relates to a tire with a rubber tread which is primarily reinforced with silica where the rubber of the said tread is composed of an elastomer base of at least three butadiene based synthetic rubbers comprised of two isoprene/butadiene copolymer elastomers having spatially defined Tg's, and a cis 1,4-polybutadiene elastomer.