eHow launches Android app: Get the best of eHow on the go.
Summary: with help from an automotive technology professor in this free video on balancing car tires.
Bob Ricewasser is a former automotive technology professor and an avid car collector. He has a broad level of knowledge on vehicles, ranging from the "horseless carriage" era to...read more
"Tires and wheels need to be balanced. First thing that you're going to notice is a pretty severe vibration, and this vibration is probably going to take place between the speeds of thirty five and fifty five miles per hour. And you're going to get steering wheel shake, and the car is going to be very uncomfortable to sit in, and also to control. Now that's a first indication that your tires may need to be balanced. You hope that corrects it. Other conditions, of course, some could take place or shock absorbers, weak springs, bent wheel, tire, a lot of those other things will cause vibration as well, so again when you pull the tire off and have it balanced off the car, and tires should be balanced both statically and dynamically. Statically is balancing the tire when it's at rest, dynamically is balancing the tire when it's in motion, they do electronic machines compensate both and replace corrective weights on the tire to correct the balance. All tires and wheels need to be balanced and you should have that checked at least every ten thousand miles. And again, an indication that you need to balance your tires is a slight steering wheel oscillation or vibration in the car. Indicate that you need to add that service performance."
eHow Article: How to Tell When Tires Need Balancing?