Izzyb47
Junior Member
Does anyone know if by tuning w/ a superchips for example and changing the tire size will at all affect my gas mileage via changing up the transmissions shift pointsor anything like that. Or does changing the tire size just allow the computer to read the distance correctly? I have a stock 3.55 gears on 37s which i will be changing over too 4.56's hopefully by the end of the week.