Hankook Optimo H727 Radial Tire - 235/60R17 99T Reinforcement belt (nylon full cover) improves high speed stability and maximizes the tires road contact for improved handling. Two coated steel belts two extra-wide high tensile steel belts give the tire crisp handling and flex to absorb road shocks. Optimized sidewall shape sidewall shape optimized to bend gently-reducing stresses and improving ride comfort. Sidewall compound specially formulated to resist ozone, aging, cracking and abrasion. Solid centerline rib improves driving feel and stability.