The Michelin Pilot Sport 4 S 255/40ZR19XL is a high performance summer tire designed for sports cars, sedans, and coupes. It features an asymmetric tread design that provides excellent grip in wet and dry conditions, as well as a reinforced sidewall for increased cornering stability and responsiveness. The tire also has an optimized contact patch for improved braking performance, and a silica-enhanced tread compound for improved wear resistance.