"Non hub centric" rims?

[b5blue]

  So I've been looking at rims and keep seeing  "non hub-centric" listings. Today I go to one shop and they say they don't have the adapter for attaching to the lug nut holes to balance tires. Then at Goodyear the guy said no not a problem, the center hole just may be larger than the ridge on the cars hub, the hole is fine for balance mounting.  So who is right? I told them I was getting 15X8 steel rims, nothing fancy. I could see Mag Wheels possibly needing an adapter for balance but close to stock steelies? 

[John_Kunkel]

Generally, any steel rim with a round center hole will fit a balancing machine because the machine has a cone-shaped centering hub. The type of wheels with no round center hole will require a hub with the exact lug bolt pattern to mount to the machine.

[b5blue]

Coming from you John, what Goodyear said makes sense.