If it were me, I'd remove the tires, remove the old valve stems, sand blast the rims, POR-15 the inside of the rim, prime the outside of the rim and paint it Black (factory base color). Rattle can paint on rims has worked well for me...4-5 light coats allowed to get tacky between coats will last for many years...my Fire Engine's rims were done in 2002 and they still look great with 30K miles on them...
Mike B
