[jhuckaby]

Anytime you alter the automobile (car, truck, jeep, etc.) with smaller or larger tires and/or rims you run the risk of altering the ride/handling characteristics as well as the accuracy of your speedometer. Mileage can and usually will be affected, too. That's just a given when you go up or down in size from what the car originally came with from the factory. Automobiles are usually designed with certain sized tires in mind as well.