The problem with the theory if I put the correct tire size on my car then the speedometer will read correctly. I
s that my OBC is accurate as if I set my OBC to beep at 70mph then when my gps says 70mph the car beeps because the OBC is accurate but the speedometer will read 80mph when the OBC is set for 70 and beeps.
What gives?
s that my OBC is accurate as if I set my OBC to beep at 70mph then when my gps says 70mph the car beeps because the OBC is accurate but the speedometer will read 80mph when the OBC is set for 70 and beeps.
What gives?
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