So, semi’s have been using Equal for years, which is a sandy sort of powder. The problem is if moisture is in the tire, the Equal can clump.
My F-150, years ago when I got my Alcoa alloys, they were in really good shape and I didn’t want to do regular balancing weights because the rims always corrode bad then. I bought these ceramic beads from I believe it’s Innovative Tire Balancing. I’ll have to look it up. Anyway, I went with their “off road“ beads and I think it calls for 6 ounces in a 31x10.50-15. They were great, no vibration even over 85 with aggressive tires. Those beads have been in three sets of tires so far. If there’s a vibration in that truck, it’s not the tires.
My choptop on 35s has the same thing in them, just whatever the recommended amount of weight was. Rides great, even at highway speeds.
My ex-gf’s car and my green Ranger got the Counteract glass beads. Her car was ok with it, but my Ranger not so much. I’m intending on dumping another ounce or two in and see if that helps on the Ranger. If it doesn’t, I’m liable to put my tire machine to use and switch to the ones my F-150 and choptop have.
The idea is a simple one, centrifugal force from the tire rotating forces the beads against the inside of the tread area, much like at a Fair or something, the tilt-a-whorl where you stand against the side and they spin it and tilt you up in the air and you are stuck against the wheel because it’s spinning. Same concept. Since the media is typically round and small, it has a tendency to shift until a balance is achieved. As you drive, it’s constantly self-balancing.