I can tell you that beteen 115 and 120 mph you can feel the car squat maybe 2-4 inches.At least it felt vlike that. It would have been tough to ger out and measure it. It is very noticable. But I plead the 5th your honor. As you reduce speed from 150 plus, I didn't notice the car coming back up to normal. I only went that high for a very short period of time on a straight away across aligator alley, I 75. But, I did do it a second time after I picked up the wife at the gas station on the way back to Naples. I have had the same medical condition as SRT SIX, "right foot acceleritis". It seem to come and go, but almost always appears when I get into the Xfire.