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- Mon Dec 11, 2017 1:50 pm
- Forum: Beta testing
- Topic: Setting arbitrary tire sizes for speedometer calibration
- Replies: 103
- Views: 94628
I have a 2013 F150 and cannot get this to do anything with my truck. I just had 295/60 R20 Nitto Ridge Grapplers installed on my OEM 20" rims. I've tried changing the pre-canned settings, and a customer setting using the calculator, and no matter what I do, my speedometer is 3 MPH slow. Any thoughts...