I saw these too...if they are genuine then it looks a good deal, I think that from BMW they would be nearer the costs of 18" works wheels (£1400) than the £800 odd that these guys want. You can fit 18s straight onto your MINI as the turn limiters that BMW fit are optional really....I know folk running -20 and -300mm drops on
JCW wheels with no rubbing even without turn limiters. Most aftermarket 18s with the right offset fit under a MINI without lock limiters....tyre width is what can make a difference. My Dare 18" rims are 7.5" wide and 45 offset and they sem fine (215 tyres but folks also run the same rim on 225s i think)
Try asking the seller what the offset of the wheel is....I think any rim with a 40-50 offset will fit a MINI without too much issue....but I'm happy to be corrected by clever people who know more
Also do a search for "
JCW" on ebay.co.uk and you will see some other places selling real or replica
JCW GP rims for same money. South West Tyres do them with Avon tyres too and with a bigger range of tyre sizes. 215s would be pretty stretched on a 7.75" wide wheel. I run 215s on a 7.5" rim and they are quite stretched. See if you can find out what tyres BMW run on the actual GP....I'm sure theres something on the site or a GP owner who can tell you. Then order the wheels with the same size and profile as BMW fit!
R