I know I've been able to change the tire size on this truck before, but now whenever I go into the "Speedo" tab I get an "error" in the current tire size.
It's a manual 2500 truck so it won't affect how it shifts but I do want to fix the speedo.
I'm going from a 33X12.5X17 back to the stock 245/75/16 (30.5)