Exactly what it sounds like. The tire isn't perfectly round, and has become more egg-shaped. It can cause vibrations, howling/thumping noises, etc. These symptoms will get worse the faster you drive. You can try having your local tire shop balance the wheel (usually about $10), but if the tire truly is out of round then you will have to replace it.
If a tire were square, than it would be a dick.
Round Shape of course :)
Tire truing is the process of making tires perfectly round to the wheel. Most tires are not perfectly round, due to a high spot on the tire. This condition is referred to as out-of-round. By gently shaving the high spot off of the tire, the out-of-roundness is corrected. Tire truing can benefit everyone who has a vehicle by reducing road vibrations, extending the life of a vehicles tires and suspension, and also improving fuel economy.
A tire that bounces is usually caused by worn out shocks. It can also be a tire out of round, broken belt in the tire, tire out of balance, or a warped wheel.
Air pressure holds the tire in a round shape, as pressure lowers nothing is holding the tire up.
Less rolling resistance and road vibration:)
vibration on one wheel ,and not remedied by balancing usually means the wheel is bent or out of round,or the tire is out of round out of round tire can be caused by hitting a curb,etc and one or more of the belts in the tire is broken.a good tire shop can find and fix this fault
Tire noises like a warping sound are a result of it being out of round. This happens when the tire is unbalanced or the front end is out of alignment.
Some people call the temporary compact spare tire a doughnut tire, I guess because it is round with a hole in the middle. You can only use this tire for an emergency.
Possible bent rim or tire out of round.(defective) answer tire out of balance is the best place and cheapest place to start
It's round and it rolls probably a wheel
35psi all round