Some FYI on these. I've been using ceramic beads for a few yrs with no issues. Bought here: https://www.innovativebalancing.com/
I've used them in 3 diff vehicles, but just recently opened up a tire that they had been in, AND another tire that had small plastic beads from another company. Don't remember the name ATM.

The ceramic beads look like you'd expect to see when in the tire. They roll around freely with no sticking to the tire.




The plastic beads look pretty bad IMO. They stick to the tire and don't flow at all when turning the tire. They where stuck to the tire so badly,that they were hard to vacuum out.




Ceramic only for me!

 

Haven't had any experience with plastic beads just ceramic and that's all I use anymore. Tires stay balanced throughout the life of the tires.

Denny