How do I adjust Speedometer?
2012 Wrangler I replaced 16 inch tires on my wrangler with a set of 17 inch tires from
another 2012 Wragler. I have a noticeable difference in speedometer. How is that
The best route is to take the vehicle to your local dealer. They have the necessary equipment to change parameters in the computer. This service is often referred to "Flash" the transmission, or "I had it flashed". The service is not expensive, and the dealers do it all the time. Good luck.
Your best best route is check out super chips they make programmer's that you can change tire size your self with. If you let the dealer do it and your battery goes dead or you unhook your battery for any reason it will go back to the original settings. Dealer normal charged 75 I bought programmer for 149.
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