[quote=“eMKay,post:150,topic:36582"”]
120 speedo mph = about 112 when you factor in the intended inaccuracy of most speedos
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I could believe that, but it’s pathetic if it’s that far off. We checked several BMW speedos (e46 330i, e60 M5, e39 M5) against GPS and Radar at the Salt flats and it was dead nuts accurate even over 140. Only one that was “off” was an e46 M3 which at 156 was showing 158.