The wizards who do refinishing & repairs on high end wheels have a process where they can re-machine the face of the wheel. That should be capable of removing the chrome leaving you with a surface that can have whatever finish you want. It is expensive. When I acquired my 2000, it had a scrub on the OEM right rear wheel lip and some of the clear coat was pealing and the exposed aluminum was slightly corroded. The cost to R&R the tire with balancing, remove the clear coat, do a little fill with aluminum where the scrub was, re-machine the whole wheel surface so that the surface of the patch and the corroded area matched the machined surface on the rest of the wheel and then clear coat the wheel was approximately $800 Cdn.
Sandblasting may not work very well, particularly if that is a true chrome / nickel finish that has been plated on to the wheel. Chrome / nickel is hard. Aluminum is soft. You could end up chewing up any exposed aluminum surfaces as you try to get the chrome finish off.
If you are thinking about restoring those wheels, the price better be really good.