I got a hold of a set of nice (inexpensive) 18" aftermarket wheels that I was planning to put on my R56. The offset and size seem to be a good fit but the holes for the studs are too small.
It looks like the R56 has 14mm studs and the holes on the wheels are drilled for 12mm.
Now, I know there are M14 to M12 conversion studs and I'm willing to try them however my question is about the hub diameter.
I come from a BMW background where hubcentric wheels were a must but on the aftermarket wheels I have for the Mini, the center hole is much bigger than the originals.
Is this going to be an issue??? I'm not sure I'm comfortable going from a 14mm stud down to a 12mm stud AND not having the hub support that the original wheels had.

Can anyone shed some light on this? Am I being too cautious or will the aftermarket wheels be safe in the end??

Thanks in advance guys. Always great advice.

 

You can order what I assume would be a 73.1mm (typical universal wheel hub bore) to 56.1mm (that's a confident guess on the hub size of your R56) hubcentric ring adapter from lots of places. I usually get mine from ebay and always opt for aluminum over plastic versions. Should be $20-30 for a set. Double check my sizes.

 

Here is the hubcentric rings:

Includes 73.1mm to 56.1mm hub centric rings for proper fitment, there are other common sizes there to 56.1 coversion.

https://www.ecstuning.com/Mini-2007-...Centric_Rings/

 

Awesome. Thanks

 

Welcome.

 

So..... Being plastic, I'm assuming they're just there for positioning and not supportive in any way?

 

They center the wheel and make sure it stays centered. They are hard nylon plastic type.