digitaldad
Well-known member
I recall having issues using the circumference number from my tire manufacturer (and into FORScan "easy" mode as well).Does anyone have the default 18 inch wheel circumference setting?
I just changed my wheels from 20s to 18s on stock tires, I set the circumference to 2560, and my speedometer is still off.
Thank you!
If you are able to FORScan program beyond "easy mode"
Go to this calculator (linked in 1st page) and click "file" - "make a copy"; new link will open.
Enter tire size values in green cells (row 17) and get values from rows 26 & 27.
Edit in FORScan and follow "step 3" on "module relearn"
Of course, helps if someone does chime in with their stock 18 easy mode circumferences.
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