The Michelin Pilot Sport A/S 4 is a high-performance all-season tire designed for luxury and sports cars. It offers exceptional wet and dry traction, long tread life, and a quiet, comfortable ride. The 235/55zr18xl size is designed for vehicles such as the Audi A4, BMW 3 Series, and Mercedes-Benz C-Class. This size has a maximum load capacity of 1521 pounds and a maximum speed rating of 149 mph.