Properly balanced tires are important for driving comfort and long tire life. Unbalanced tires can cause vibration, resulting in driver fatigue, premature tire wear and unnecessary wear to your vehicle's suspension. Tires should be balanced when they are mounted on wheels for the first time or when they are remounted after repair. Vibration may also be due to misalignment or mechanical problems. 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.
Proper alignment is necessary for even tread wear and precise steering.
Many vehicles today are equipped with rear suspensions that can be adjusted for alignment. The moderate cost of having your vehicle aligned can more than pay for itself in tire mileage, performance and comfort. If a tire loses all or most of its air pressure, it must be removed from the wheel for a complete internal inspection to be sure it's not damaged. Tires that are run even short distances while flat are often damaged beyond repair. Your best bet is to make sure your spare tire is always ready to do the job.