B7 wheel key question

[racer m]

Does anyone know if the key to unlock the center caps on the Alpina B7 are unique to each car, or does the dealer have a "master key"?

My dealer is telling me that they cannot take off my wheels to replace the tires w/o my key, so I now have to drive out to them and drop the key off after just dropping off the car. The service adviser never asked for the wheel key before I left the dealer either. Would be a real bummer to find out that this trip isn't necessary.

Thanks.