I've heard that you can have balanced tires with a one-time injection of 50/50 antifreeze/water in through the valve stem (removed and deflated). Supposedly it reduces vibration, shimmy, and heat as well. It provides a dynamic rather than static balance (continually adapts to changes in tire wear). I would also assume it's safe for the tire since antifreeze is non caustic to rubber. Anyone have experience or knowledge about this? I'm game for this one.