The faces were kept decently clean. The barrels....mmmm, not so much. I don't think they had been cleaned before. With the wheels off I spent about a hour on them.
While they were clean, I applied a hydrophobic coating. I have a really neat video that I am working on now that shows off how easy to maintain these wheels will be moving forward.
Before (the spare is the closest and the worst)
After (notice how well that same spare came out)