What about get the dealer to put the most expensive stock replacement on. Keep your punctured tyre and go get it repaired and get the shop to swap it back into your car. Flog the new one on eBay or keep it for a rainy day
X3 xDrive20d M Sport, Space Grey, Black Nevada, Auto, 19" 369M, Xenons, Servotronic, Bootlid powered, Sun glass, Mirrors folding, Extd Storage, Media Pro, Mobile Apps, DAB, Business Sound.
On Order: Mercedes-AMG GLC 43