Bloodham25
Well-Known Member
I'm about to do mine.I did mine today with Forscan. Went into BdyCM and changed value from 2178 to 2080. I did not get a check engine light and the speedometer appears right via GPS speed.
Basically I just take whatever the Number #2 tire size is (In circumfrence) and enter that in with ForScan?
I'm going from 275/40/R19 rear to 285/35/R19 rear.
So it would be 2207 --> 2141 (This is the number I enter)
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