i wash with phospheric acid after i blast,however i'm not sure i would use that on wheels.having said that, a light wash should not cause the metal to become brittle like it may if you were to soak them for while.
the rust converter is not much different. wire wheel or brush the flash rust off and prime then you should ready for what ever finish you choose to use
tom


I don't suffer from insanity, I enjoy every minute of it!