Originally posted by InRageD
if you remove 1 lbs. from say the wheel, doesnt the car accelerate like you removed X amount of lbs. from the unsprung body weight?
Generally the association is made between lowering rotational weight and lowering the overall weight of the car.
Unsprung weight is not the whole weight of the car. It's the weight of the suspension components and such which are not part of the car that is held up by the suspension.
Like JimBlake said, SPRUNG weight is the weight of the car. Whether or not the weight is sprung or not though, does not change how much weight the motor has to tow around.