Anyone have any experience with these?

[BGlover67]

https://www.amazon.com/gp/product/B06WRVBSC9

Self balancing tires using disposable beads.  I've seen some folks on other forums swear by them, especially for wire wheel rims like on Cobras. 

[TOBKOB]

I have seen several threads on the Model A forums asking about the beads...a lot of folks like them but a lot say they don't make any difference.  A Model A has vibration that was built in at the factory.  Does this mean it is concours? 

TOB

[2112]

I have used them. They can't balance a bad tire.

I now watch the run-out on the balancer. If rotating 180 degrees won't fix it, I reject the tire for one that is actually round.