Westlake SA07 Performance Radial Tire - 235/50R18 101W Enhanced Control And Stability. Rigid, Siped, Center Rib Enhances Lateral Stability And Control Through Continuous Tire-To-Road Contact Increased Grip And Traction, Cross-Grain Siping Pattern Increases Traction By Creating Extra Surface Area For Enhanced Grip Optimized Wet Traction, Four Circumferential Grooves Optimize Water Evacuation For Enhanced Wet Traction Improved Tread Life, Symmetric All-Season Tread Designs Simplify Tire Rotation Options For Better Wear And Tread Life West Lake Quality / Tire Size 235/50R18