Op asked how to tell if a tire is out of round. You can check them by jacking up the front end and putting a block of wood under the tire then spin the tire slowly. You can measure the distance between the tire and the wood and see how out of round it is(like a dial indicator). My experience is that once a tire is out of round 3/16 of an inch or more you will definitely feel it. It can't be fixed with weights, beads or balance techniques. Some folks on this forum have had their tires shaved to bring them back to round and a smooth ride returned.