Quote:
Originally Posted by Transfer
As others have said this is common, but which wheel/tire package do you have? According to my GPS radar detector my M340i with staggered 19" PS4S is exactly on the mark. 75 mph = 75 mph.
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Uh oh.....I better be careful, I've always relied on speedo being 3 mph high for the last 40 years worth of BMWs.....