The Michelin Pilot Sport A/S 4 is a high performance all-season tire designed for sports cars, coupes, sedans, and minivans. It features a tread pattern that helps provide superior wet and dry traction, as well as long tread life. The tire also features a silica-based tread compound that helps provide increased grip in wet conditions. The 215/45ZR18XL size is designed to fit 18-inch wheels.