I am purchasing this car once I get back from my deployment, and I believe it has the 17" or 18" rims not sure which came with it, and havent seen it. Just doing some planning if I do purchase it. Anyways if I go from 17" to 19" what else would I have to do for the car, and also how do you calibrate the speedometer when you change if I have to. Appreciate the help.