I got some hub sentric rings for the new rims and tires I got mounted for the car I am taking delivery of next weekend. The tire place gave me rings that said:

Wheel Bore Size: 73mm
Vehicle Hub Size: 56.15mm

I searched on here and saw that the mini's hub is 56.1mm so will these work being 56.15? Also they are plastic, will that be ok??

 

56.15 is fine That's .05 mm of clearance (which is tiny) between the inner diameter of the ring and the outer diameter of the hub.

Metal would be preferred, but the plastic ones could hold you over until you source some metal ones.

 

or, as they say in the business, "fiddy-sic-dot-one."

 

Plastic's great, but not at the track (it'll eventually melt, and is hard to get off everything).

You can run w/o hubcentric rings, but can get some wobble if you're not careful evenly tightening/torquing the lugs (while car is in air or *lightly* on the ground and jack).

 

Yes, those will fit the Mini.

But I agree with DixonL2. If you tighen the lugs carefully, you don't even need hubcentric rings most of the time. There are exceptions, but I've never had a problem and I'm pretty **** about such things.