Dunlop's SP Sport 01 and SP Sport 01 A tires are Ultra High Performance Summer tires for sports cars, coupes and sedans. Dunlop's SP Sport 01 tires were designed to be multi-talented tires and were initially developed for Original Equipment use by leading automotive manufacturers to complement the latest in vehicle design and construction. SP Sport 01 and SP Sport 01 A tires are not intended to be driven in near-freezing temperatures, through snow or on ice.On the outside, the Dunlop SP Sport 01 features a 100% Silica tread compound that increases dry and wet grip while reducing rolling resistance and increasing treadwear. The tread compound is molded into an asymmetric Tri-Area-Tread design that is divided into three tread segments to unite the aspects of smooth running, sportiness and safety. On the inside, the SP Sport 01 features twin steel belts reinforced by Dunlop's Jointless Band (JLB) spiral wrapped nylon to provide high speed durability while minimizing weight. The tires feature a rayon cord reinforced casing to enhance ride quality and an aramid reinforced bead to ensure tight and secure fit of the tire on the rim. Dunlop SP Sport 01 tires feature an attractive graphic sidewall design of smooth black letters reversed out of a serrated band and include a rim protector rib on all sizes to help protect wheels.