Tires that are out of balance can cause a vibration which can lead to driver fatigue, premature or uneven tire wear, and unnecessary wear and tear on your vehicle's suspension. Tires should be balanced when they are mounted on wheels for the first time or when they are remounted after being repaired. Proper alignment and balance contribute to even tire wear. A A vehicle is said to be properly aligned when all suspension and steering components are sound and when the tire and wheel assemblies are running straight and true. Just as a person's shoes wear evenly across the heels and soles if that person's weight is evenly distributed over his feet as he walks, tires will wear evenly if the vehicle's suspension system allows them to meet the road evenly.
Proper alignment is necessary for both even tread wear and precise steering.
Many vehicles today are equipped with rear suspensions that can be adjusted for alignment. A Regular tire rotation promotes uniform wear for all of the tires on a vehicle. Consult your vehicle owner's manual for the manufacturer's rotation recommendations. If no rotation schedule is indicated, rotate your tires every 6,000 to 8,000 miles. A full-sized spare should be included in the rotation pattern.