37" Tires in Forscan

SGT. Rosie

Tremor Member
Joined
Jun 14, 2022
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Location
Grand Junction, CO
Military
US Marine Corps
Hello,
Apologies if this has been answered but I've searched a bit here and forscan forum. I'm a father of 2 small girls and don't have much spare time. I've got everything setup and disabled in forscan mainly temps above gauges, disabled double honk on exit with key, lowered my tpms sensors to 45 front 40 rear, and finally disabled the triple chime on ignition startup. My only issue is correction the speedo to my new nitto ridge grapples 37x13.5r18. I've done everything on the plain English side not as built for simplicity "keep it simple stupid". Now I have the error codes P0610 which is the tire circumference out of range. I changed it from the stock value of 2689 to 2932. I did hit relearn on both the PCM and TCM. If I clear the codes they don't come back until the next time I use forscan but ny check engine light is on. Any advice???
 
For what it's worth I was able to leave 3.55 gears and change circumference to 2800 and all is good. At 70mph and I am dead on with GPS.
 
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