Not sure if those Borbets are hubcentric. Either way, it's not an issue as the shop would just use rings anyways.
Your bigger issue is that 16x9 ET15 wheels hit the front strut housings, at least on 51mm cars. The North American M10 318i has 45mm housings, no idea on whether they squeeze past those or if your car even has them. Just assume the worst, you will need 3mm spacers to mount the front wheels with 215 tires.