Here is what I have learned the hard way. In order to get rims to mount to multiple vehicles and for tolerance build-up reasons, all the holes have a little slop in them. Well, when I replaced the rims on my Blazer, I originally had hub centric rims, but the new ones were lug centric. What happened was, nobody could get my rims to balance properly. Sure, the machine would say they were balanced, but when I would drive down the road the next day, they would bounce like crazy. I even had the folks from the garage ride down the road with me. Finally, someone smart figured out the problem. We added a small ring inside the rim that made a tighter fit to the hub. Basically, we converted to a hub centric rim. Never had problems again. What was happening is, when you mounted the rim on the lugs, the rim would slop down to the bottom most point given the clearance in the lugs versus lug holes. So when you bolted up, it would be biased in one direction.
Not sure if that helps or not, but it made a big difference for me. So don't just dismiss the question, do some more research.