The Michelin Pilot Alpin PA4 is a high performance winter tire designed to provide superior traction and handling in wet, snowy, and icy conditions. It features a directional tread pattern with large tread blocks and sipes that help to provide excellent grip on snow and ice. The tire also has an advanced rubber compound that helps to reduce rolling resistance and improve fuel efficiency. It is rated for speeds up to 92 mph and is available in sizes ranging from 16-20 inches. The 225/40R18 92V XL size is ideal for vehicles such as sports cars and performance sedans.