The N’FERA SUR4G is an Extreme Ultra High Perfromance. The Two wide linear grooves and two diagonal grooves deliver high drainage performance enhancing driving performance on wet roads Three wide ribs in the center maximize vertical stiffness for enhanced braking performance Wide center ribs provide maximized vertical stiffness for enhanced high-speed forward driving stability Maximized diagonal block stiffness enhances handling performance when cornering. Caution : Never store or use the N’Fera SUR4G below -10?(14?) as this may damage the tire and impede performance. Nexen N’Fera Sur4G 275/40R20 Summer Tire Specifications Tire Size 275/40-20 Tire Width 275 mm Wheel Diameter 20 Warranty Distance 0 miles Tire Speed Rating Y Tire Load Index 102 Brand Nexen Model 8600077934992 Manufacturer Part Number 8600077934992 Manufacturer Nexen 
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