Cannot find any scientific validation of product "Dyna Beads" for tire balancing. I'm intrigued by the difficulty in locating any reputable scientific analysis of this method. Google "Dyna Beads". Primary vendor of these tire balancing beads is the following company.... http://www.innovativebalancing.com/index.php There are dozens of additional manufacturers/vendors. Is there any sound science behind adding loose plastic beads to the periphery of a rotating mass in order to achieve balance? I cannot find a single instance of rigorous scientific analysis of the efficacy of such methods. It may be that I'm not familiar enough with physics terminology to be using the right key words. Motorcycling and automotive forums have been aflame with anecdotal skirmishes over these products for many years now with, evidently, no reputable scientific agency, gov't or independent safety research facility, automotive, motorcycle, aeronautic, motorsports manufacturer, university, or other stepping forward to attempt any conclusive analysis of this method. It would seem to be a fairly important safety and performance issue. Again, I'm pretty astonished. Is it just possible that from a purely scientific standpoint the idea is so patently absurd that no reputable physicist would even bother with analysis? Otherwise, could anyone kindly point to papers or studies pertaining to such methods of dynamic balancing/stabilizing, particularly as they might either confirm or discredit the method?