245/45ZR17 Nitto NT555 G2 99W XL Ultra-High Performance Summer UHP TireThe NT555 G2 is an ultra high performance tire designed for use in warmer weather that offers drivers strong performance on dry and wet roads. Warmer weather means that it's time to hit the open road for most drivers, but they need to make sure their tires can perform in the higher temperatures. Designed for use during warmer months, the NT555 G2 from Nitto is an ultra high performance tire that offers drivers strong performance on wet and dry roads.