Asymmetric tread pattern permits unsurpassed range of capability from snow traction to true Z-rated performance. Extra-Wide circumferential grooves provide superior water evacuation even in hard cornering where narrow grooves can close. Smaller, highly siped interior tread blocks maximize wet and snow performance. ETEC System replaces conventional circumference cap ply with continous spiral wrap designed for the specific needs of ultra-high perfomance driving conditions. Larger outer shoulder tread blocks maximize cornering force and improve predictability and driver 'feel' at the limit. Transitional block element design provides stability at the edge of the element for greater predictabilityduring turn-in and cornering. Two Steel Belts contribute strength and high performance endurance. Polyester carcass construction provides an extra measure of ride comfort. Z Speed Rated capable of speeds over 240 km/h. 80,000 limited treadware warranty