Run-out and out of round are terms used to describe when a tire or wheel assembly is not perfectly round, while balanced tires are tires that have been balanced to reduce the risk of uneven tread wear and other problems:
Run-out
Also known as out of round, run-out occurs when a tire or wheel assembly is not perfectly round. Run-out can be caused by a bent rim or uneven tire wear. There are two types of run-out
There are two types of tire runout: radial and lateral: