I would think it would tend to imbalance the tire. Wouldn't the balls gravitate toward the heavier part? Well if it works it works. I get mine mounted at a shop so I let them balance.
Whether or not we understand the centrifugal physics going on or not, they do work and have been proven to work in millions of miles of truck tires long before anybody ever tried them in motorcycle tires. And, to clarify, I do believe that Centramatics work as advertised. It's just that I don't see how they can do any better job than beads themselves. But, I'm not a physicist, so perhaps there's a gyroscopic effect with the way they're designed.
What I do know is with CounterAct statically charged balancing beads front and rear I can remove my hands from the grips at any speed and even while decelerating at any speed and 1) I have no wobbles, and 2) the tires look brand new after about 8,500 miles. So, I've got to believe my eyes that they're working; and for about $35 including the really cool candy spectra red valve stem caps!
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recently got a set of Centrematics but they have no instructions for the installation. the videos I have seen only show one disc on the front and one on the back. I thought it was 2 on the front and one rear. Any help here is appreciated.