245/35ZR19 | 305/30ZR20 The Pilot Sport All Season 4 ZP (Zero Pressure) is Michelin's Ultra High Performance All-Season run-flat tire developed for Original Equipment use on the Chevrolet Corvette. Chosen by Chevrolet as the first all-season OE option on a Corvette, the Pilot Sport All Season 4 ZP is built to push the limits of all-season performance, plus provide temporary continued mobility after a puncture has allowed complete loss of pressure for a distance of 50 miles at up to 50 mph. Designed to offer high levels of dry and wet traction, combined with confidence in inclement weather, the Pilot Sport All Season 4 ZP aims to control the moment no matter the condition, even in light snow.