Chevrolet Camaro ZL1 and Chevrolet Corvette ZR1: The consonant that changes everything Published on September 6, 2012 in Comparative Tests by Marc Lachapelle Photo: Alain Morin The ZL1’s tires, Goodyear Eagle F1 Supercar P285/35ZR20s in front and P305/35ZR20 in the rear, bite into the track tenaciously.