In the northeast, always use an anti-sieze on the threads to keep them from rusting solid. For keeping them cosmetically pleasant, I use Eastwood Rust Encapsulator. But you do need to repaint them once in a while if you pull the wheels off a lot.
My oil line fix
My 100k stopped odometer fix
Brace for impact, I'm in a "modifying mood". Massive thread count inbound.