You do know tire ratings are for a set extended period of time don't you? I have a feeling some commenters here haven't intentionally set out to see what a car could do "flat out." Even a lowly stock 305 2 barrel '78 camaro with 3.08 gears can top out the 130 mph speedometer. I can tell you from first hand experience from "the death seat" that Dunlop Qualifier G/Ts will leave brownish colored rubber tracks on the road with the combination of speed and downforce.