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Rule of thumb is that 100 lbs in weight reduction will improve 1/4 mile time by one tenth. In the case of a wheel there can be additional improvement if the the weight distribution is wheel center weighted. If the wheels are smaller in diameter there will be an additional 1/4 mile improvement. The opposite is true in each case.
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 X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas
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