Rust on OEM wheels?

[Ohliuw]

The rear rotors are rusty garbage (I think this is known fact), but is it normal to see something that resembles rust rush on the OEM wheels. I wash completely the wheels and the tires after every change in spring/fall and store them in a shed during the winter.

 

[Landshark]

They’re aluminum. Rust forms on ferrous metals.

Have you tried removing it and applying some type of anti-corrosion protectant, prior to storage?

 

[MrFixit]

Perhaps this is some kind of mildew, in which case it should come off with some kind of cleaner and a little elbow grease.