The improvements that Chevrolet has made to the latest editions of Corvette seem to be really working. First we had the 2012 ZR1 shaving six seconds off its previosu record around Nurburgring, and now the 2012 ZO6 goes round the Green Hell in 7:22.68. That is a full 20 seconds faster previous Z06 fast lap recorded in 2005. 20 seconds in motorsport is like two years! The new Michelin tires Chevrolet is using for the Corvettes play a major part in their incredible performance.