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      11-15-2012, 02:34 PM   #6
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Originally Posted by ben@tirerack View Post
This is not completely shocking when you factor in that BMW speedo is usually reading a few percent high. Stack the ~3% error on the speedo with 3.5% error due to tire size variation and maybe a couple percent error in the GPS and you're right there.

+1; I don;t think thats unreasonable at all
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