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      02-14-2012, 03:36 PM   #8
noro
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Drives: '91 M3, '04 E46 ZHP, '72 2002
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Quote:
Originally Posted by pcbrew View Post
I don't understand your equation.
Standard wheels & tires are 53 lbs each or 212 lbs unsprung weight.
What would lightweight wheels & non-RFT tires weigh?

How do you estimate unsprung weight of active suspension pieces?
Basically I am saying that if given the choice of lightweight wheels/tires vs m-sport I would pick light weight. The effect of rotational mass on the car is far more pronounced than stationary weight at a rate of ~ 1 to 5 (varying based on what is happending with the car at the moment). Meaning that if you drop each corner by 13 lbs you will get the same effect as having ~200lbs lighter car.
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