100% correct.Miro 111s do not use the same size caps as OEM. The only option is to retain the use of the supplied center caps and utilize 65mm roundel center cap stickers you can source readily on eBay. These stickers are made of metal alloy with adhesive backing and you just simply adhere it over the existing Miro cap.
For the Miro 18's I know that is correct but for the 20 inch Miro 111's I heard the new batch can take the center cap now but I was told this by a representative Bavarian Exclusive and they probably don't fit snug either. Love those wheels though!I just finished researching this. The simple answer is YES, but you should know there is no guarantee. I bought Miro 18's for my winter set-up and took delivery last week. The manufacturer's representative told me that the wheels used to not take the BMW center caps but now they will. My mechanic tells me that is wrong: they don't fit snugly and they will fall out. That is why I am getting the decals (which I am sure have sizing issues of their own and you should measure the center cap that you will be using very carefully before you order). :confused3