GT Radial 255/35ZR20 97W Champiro 328 Ultra High Performance All Season Strong integrated shoulder blocks that provide improved cornering force and traction High silica content formula which improves wet and dry handling Four deep, wide circumferential grooves that provide efficient water dispersion and wet performance Center rib design delivers linear stabillity and crisp steering response Optimized pitch variance tread design which reduces noise level for a quieter ride