Warren, here is the reply I received from the Dyna Bead people:
Hi Scott,
The flat spot causes no disruption of the beads at all, centripetal force
keeps them tightly in place as if they were glued. Once they are in
position, around 20 - 25 mph, they stay there, so no heat is generated at
all. In reality, your axles will run much cooler being in perfect balance
all the time. We have had a number of customers tell us this after feeling
the trailer axles themselves after a long, high speed drive.
Robert
Technical Support
Ceramic Tire Balancing
Tel-USA: 866-352-7251
Tel-Outside USA: 585-467-6028
www.dynabeads.com
> Here is my 2 cents worth on the ones that go inside the tire loose.
> I have no experience but this is what I feel from just casual observation.
> The tire flexes at the road contact so anything placed inside the tire
> loose
> will slam into the road causing it to bounce or shift out of the optimal
> position every time they hit the ground preventing proper active wheel
> balancing....