WhiteBolt
Well-known member
- Thread starter
- #1
I recently put a set of factory 20" Lariat rims w/General Grabber HTS 275-60-20 tires on my 22' Pro and my speedometer is now consistently reading 2mph slow.
I want to use Forscan to recalibrate the speedometer. I have already scanned my truck and saved backups of all "as built" modules. I know there are tire calculators out there than can give me tire circumference, but I would rather copy OEM BdyCM factory values directly from a Lightning Lariat. I think these would be the most accurate values to get my speedometer and GOM reading correctly.
Forscan values from my Pro w/18" rims:
BdyCM - Tire Circumference=2476
BdyCM (as built) - 726-12-01 = xxxx 3146 xxxx
726-15-01 = xxxx xxxx 09xx
726-15-02 = ACxx xxxx xxxx
Would appreciate if anyone could tell me the factory values from their Lightning Lariat.
Thanks
I want to use Forscan to recalibrate the speedometer. I have already scanned my truck and saved backups of all "as built" modules. I know there are tire calculators out there than can give me tire circumference, but I would rather copy OEM BdyCM factory values directly from a Lightning Lariat. I think these would be the most accurate values to get my speedometer and GOM reading correctly.
Forscan values from my Pro w/18" rims:
BdyCM - Tire Circumference=2476
BdyCM (as built) - 726-12-01 = xxxx 3146 xxxx
726-15-01 = xxxx xxxx 09xx
726-15-02 = ACxx xxxx xxxx
Would appreciate if anyone could tell me the factory values from their Lightning Lariat.
Thanks
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