The Toyo Proxes R888R 245/40R18XL is a high-performance radial tire designed for use on sports cars, coupes, and sedans. It features an asymmetric tread design with a large outer shoulder block for improved cornering stability and a solid center rib for increased steering response. The tire also has a reinforced sidewall construction for improved handling and stability, as well as a silica-enhanced tread compound for excellent wet and dry traction.