I’ve read lots of threads but don’t seem to be able to find a definitive answer. I’ve got 17” Kopi’s coming my way and trying to find a definite answer on the emblem size of they use. I’d like to get the Motorsport roundel for them since I’d feel like a fake if I put Alpina emblems on them. 
For those wondering - 48-50mm is the size

For those wondering - 48-50mm is the size