N FERA SU1 is a new premium ultra-high performance asymmetric summer tire. Its three wide longitudinal grooves maximize wet driving performance and enhance superior handling. The dry grip improves handling and braking performance. The optimum surface split siping has been applied for 3-D block design and enhanced wet/dry traction performance. Foce concentrated during high speed cornering is dispersed through equal block division and enhanced block rigidity to boost cornering and steering stability. N FERA SU1 is a long-lasting tread wear tire with V, W and Y speed ratings, and a variety of sizes from 15- to 20-inch diameters.