Ohtsu ST5000 All-Season Radial Tire - 255/55-18 109H Full Depth Spring - for excellent wet traction, delivers unparalleled levels of all season grip throughout the life of the tire. Solid Center Rib - for excellent lateral handling and highway stability Four Wide Circumferential Grooves - deliver increased hydroplane resistance for improved wet weather performance. High Angle Lateral Grooves - with offset block position maximize water dispersion and all season traction Two Into Three Block Pattern - ensures low noise and flat,even wear for the highest levels of cabin comfort. Joint-Less Nylon Cap Ply - increases durability at high speeds and promotes long lasting even wear