The Corvette Grand Sport sits on larger 19-inch wheels up front and 20-inch wheels in the rear, all of which are wrapped in Michelin Pilot Super Sport tires. It also features upgraded, Z06-style cooling for track use. ... With the power of the legendary LT1 V8 engine and many of the aerodynamic components found on Z06, Corvette Grand Sport provides the perfect combination of power and handling to help make you feel closer to the road than you ever have before.