I'm not sure I understand what you mean?
Ground clearance, as I understand it, indicates how deep the wheel well is for the tires to go up into, or how high the lowest point of the chassis is above the obstacle you are attemping to get over.
I don't believe it indicates how high of an object it can clear at any speed without some structural integrity compromised/damaged/destroyed.
The Explorer I was driving had about 8" of ground clearance (maybe a little more due to extensions), and that was over a 4" speed bump.
-SW