Mastercraft Strategy All-Season Radial Tire - 215/60R15/SL 94T 60,000 Mile Treadwear Protection Limited Warranty (U.S. Only) T-Speed Rated Quiet Riding Design The five-rib, all season design employs a computer enhanced sound quality system that optimizes the tread patterns pitch sequence for a quiet ride. Even-Wearing Design A notched center rib, along with a refined tread element shape, helps provide even treadwear. Shoulder slotting is also designed for resistance to irregular wear while providing solid, all-season performance. Four Circumferential Grooves Designed to propel water out and away from the tread contact area, the grooves combine with the high sipe density and variable shoulder slots to help provide superior all weather traction.