Bridgestone Tire S20R Evo 140/70R17 003262 Ultra-High performance radials improving upon the S20 to enhance handling performance and cornering using existing tread patterns with updated construction and rubber technology from MotoGP Handling and stability are improved by optimized stiffness of both front and rear tires Wear life is enhanced without losing performance of S20 S20 EVO (front) has Dual Compound (3LC) technology plus a high strength belt package Rear tire re-introduces Triple Compound (5LC) technology originally introduced in the Battlax BT-016 to provide both good grip and wear life