The Michelin Primacy A/S 255/55r20xl is a performance all-season tire designed for luxury SUVs and light trucks. It offers excellent traction in wet and dry conditions, as well as improved handling and braking. It has an optimized tread pattern that helps reduce noise levels, and a tread compound that helps provide longer tread life. It is also designed to provide a comfortable ride, with a reinforced sidewall that helps reduce road vibration.