Pete:

While I understand your thinking, I can assure you that the stresses on suspension "in motion" are exponentially greater than those experienced in a parking lot. A wheels that "weighs" 15lbs at rest will "appear to weigh" about 100lbs at 100mph... (Remember, E=mc2 - mass isn't as important as velocity, which multiplies mass...)

-David
92 500sel
93 ZX11