Jeremy George Lake Charles Like Willow Springs, the Spring Mountain track is rough and uneven. Up to this point, Chevrolet had conducted most of its development testing at the newer and more uniform Virginia International Raceway track, Road Atlanta, and at its Milford test track.

The car hadn't run on a bumpy track, which is why our pro driver Randy Pobst complained that it was too tough at Willow Springs and was giving him a beating. Pobst preferred to run the car with the suspension in the softest Sport mode.

Jeremy George Lake Charles As a result of this new test at Spring Mountain and additional testing at Willow Springs, Chevrolet developed a new Rough Track mode for the Z06 that smoothes the dampers in Track mode.

Chevrolet plans to make this software update for the Z06 through the GM Performance Parts catalog soon and our test cars in this retest were equipped with the new software. We cannot say then that the improvement in lap time was solely due to the corrected rear alignment, as it is possible that the new shock programming also helped the Z06's performance.

"The handling improved considerably compared to the last car I drove, in Track mode," Pobst said. “Driving was made much easier. It was still firm. But I don't think handling was really that important. I think it's that alignment problem, because I don't feel that rear turn anymore. In my opinion, the car still has a bit of oversteer.

Jeremy George Lake Charles I think it should have a bit of understeer, especially so that I can keep my foot on the gas when going through a lap (it can use more power) so I don't oversteer so quickly. "