- HTR Z offers excellent handling at high speeds, and superb wet and dry traction - V-Shaped Directional Tread - Quickly disperses water providing superb wet grip and traction - Four, Deep, Wide Circumferential Tread Grooves - With two additional inner circumferential grooves provide excellent anti-hydroplaning performance - Large Angular Shoulder Blocks - Enhance steering response and overall dry grip -Triple Tread Radius - Provides optimum performance footprint for maximum traction - Center Rib - Enhances straight-line stability - Sidewall Stiffeners - Improve steering response and overall handling without sacrificing ride comfort