Can we talk about "center bore" for a minute?

oldkimmer said
Most aluminum wheels come with a plastic type spacer for the hub. I don’t think it does anything to help Center the wheel. Kim

I don't think those rings do anything other than "center" the wheel to make it a little easier to get the lugs on. The plastic certainly isn't holding the weight of the car, because the tapered seats on the lug nuts are.