Hi,
I was looking into doing this recently but was scared away from the refurb route as I had some cracks to the 9J rears.
Performance sticker £10:
https://www.ebay.co.uk/itm/BMW-Performance-Logo-Premium-Cast-Wheel-Rim-Decals-Stickers-Kit-M2-M3-M4-Alpina/153270410448?hash=item23afa0dcd0:g:u08AAOSw3T5b9T2v
If you find your wheels can't be refurbed for whatever reason, I have two immaculate 8J wheels with tyres that I'd be willing to part with.