| You're right that it's calculated, but only because measuring it directly would be a serious pain in the ass, but it's critically important to car perfomance. It is the quantity that moves you at a constant speed. I really like your Z by the way...wheel/tire combination looks outstanding ;)
-------------------------------------------------------------------------------------- "Let's make like a baby and Head Out" - Jimmy "If A equals success, then the formula is: A = X + Y + Z, X is work. Y is play. Z is keep your mouth shut" - Albert Einstein "Funk you very much" - George Clinton  

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