POR products has a kit called Wheel Restoration Kit. It includes stripper, cleaner and polishing compounds as whell as the buffing wheels and goblets. At $129 seems a bit steep until you try to get the items individually.
Taking a clue from this, get some Aircraft Stripper, apply, get rid of the clear coat, then clean / polish the wheels as best as possible and then clear coat with your choice of a chip and impact resistant finish.
POR also sells a clear POR-15, although I don't know how well it would work for this. You might give them a call though and ask.