Quote:
Originally Posted by petevb
We know that it's possible (normal) for the roll center to be above the ground front and rear.
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Actually that is not true. It's quite common for the front roll center to be at ground level or lower in many cars. I don't think that this is the case with the 911, but with cars with double A-arm suspensions it can be more common. There's nothing really magical about the roll center versus the contact patch as long as there isn't a huge difference in the height between the two.