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Hooked up Forscan to adjust tire size. Changing from the stock 255/70r16 to 285/75R16. New tire would equal 2619mm. When input that number and write it, the speedometer is even farther off. I ended up dialing back until I could get a matching speed on dash and GPS. I ended up at 2420 which is obviously nowhere near the actual tire size. At the 2420 speed and odometer are almost exact by GPS.
I'm not understanding how that is possible with the tire size I ended up on being so far off from the actual. Any thoughts from those more experienced? This is my first time working with the software.
Also as others have said, unable to relearn PCM, AWD relearn without issue.
Thanks.
I'm not understanding how that is possible with the tire size I ended up on being so far off from the actual. Any thoughts from those more experienced? This is my first time working with the software.
Also as others have said, unable to relearn PCM, AWD relearn without issue.
Thanks.
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