Ok today I went up from a 17" to 18" rims. I was wondering if anybody knew a cheaper way to get the speedometer right again. It is not that bad, called the dealership (Crosby Friendly Ford) and they said it would be $105 to come in and change the computer.
It is not neccessary to change, but if I found a cheaper I might consider it.
you can get a programmer for around $100 from super chips that only corrects the spedo, and you can reset it whenever you want to change sizes. Or spend 200 more and have a programmer.