The Toyo Tire Proxes T1R is an ultra-high performance tire designed exclusively for high-end sport sedans and coupes. The Toyo Tire Proxes T1R features a refined tread design and construction that offers improved dry and wet handling and performance. A wide range of sizes are available in V, W and Y speed ratings. FEATURES AND BENEFITS “Generation S” Silica-Reinforced, High-Grip Tread Compound. Increased silica in tread compound improves wet performance while providing excellent dry performance. fined Unidirectional Tread Design. Provides excellent dry and wet performance with a modern design. V-Shaped Main Grooves. Disperse water for better wet performance. Rigid Shoulder Rib-Bands. Improve cornering for exceptional dry performance. Reduce irregular wear for a smooth, quiet ride. Parallel Shoulder Slits. Help reduce irregular wear.