[cmoc-bob]

"Hub Plates" mount the wheel assembly using the lug nuts holes.

Coats and Hunter sell these, I would recommend the Hunter Road Force balancer.

I remember a Coats balancer training that noted 50-60% of balance issues are mounting the wheel assembly to the balancer.

The hub plate takes the "cones" out of the picture, those are typically the quick and easy way to mount a wheel to a balancer.

Hope this helps.

And - like other posted, bent rims will be spotted by high tech balancers.

And - match mounting also helps. Hunter Road Force will spot that accurately.

[Shiny]

I called local tire stores to find one that could balance off the lugs.

Local Les Schwab was both unfamiliar and uncapable.

Local Firestone said "yes, we have an adapter and it should work with your wheels"! They are on my to-do list.