You should be able to get curb rash fixed through your dealer via a shop they use--they just re-coat the entire wheel. I know on mine I had the front right wheel done it was only like $200. And just take it out of her Shoe Fund ha.

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2008 X5 4.8
Jet Black/Black Nevada/Dark Burl Walnut
Adaptive Drive
Premium Pack
Tech Pack
Climate Pack
Sport Pack
20" Wheel Option
Premium Sound
Sirius Satellite
Rear DVD Entertainment
Multi-Contour Seats
Comfort Access
3rd Row Seat
Heated Front Seats
Running Boards
3M VentureShield Paint Protection Film