I am currently running the
Dyna beads in my dual sport motorcycle tires. Mine runs big fat heavy tires so a dynamic balance could be an advantage. It runs out smooth up to 65mph which is about the top for my gearing.
I bought enough to do the trucks tires at the next change. I hear lots of good things from those who have tried them. The bike works well, I have no doubt they will work for the truck too.
Dyna beads demo video on Youtube
How it works has pictures of it , but the bottle was a better example for me.
It is amazing how they react and move. There is a slight static charge in the plastic baggies. You can see the influence this has on the tiny ceramic orbs as they wiggle and jiggle around the influence. They pour like water out of the baggies into a bottle. You know how you flick the baggie to get all the crumbs to fall to the bottom? These really do seem to be influenced less by that method. Opening the bag and a little shake and they fall , better than tapping the bag. I may not be conveying that very well, but the properties are very different from a material that is less dense.
Maybe there is a little "magic" in these beads?
I have also been intrigued by the Airsoft pellets. They have less mass, but may be easier to find. Insertion through a valve stem is not an option, so these would only work in a tubeless mount.
Expedition Portal - airsoft pellet tire balancing?
Automatic Tire Balancing Using Airsoft Pellets
Another option for dynamic balancing is
Centramatic Wheel Balancers. I have seen them on big trucks , but have no experience with them.