Quote:
Originally Posted by MonacoBlueE90
Yeah, we had little bit of arguing about what happens to speedo, when upsized tyres are used. So there probably are some conflicting info. Truth is speedo shows more than true speed. You can code the digital speed hud to show the exact speed.
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I actually have a buddy with an 09 m3 and he says him and people he know that have M's have read and debated that the digital tach is off as well. any info on that? thanks for the reply!