Protect steel rims from solid rusting?

Sodele, I just mounted my winter bikes. I don’t plan on riding the new Honda with ice and snow, but I still have my old golf. But since I got the tyres when I bought them anyway and the new regulation also comes into force with the spongy winter tyre obligation, I just did it. Should also be advantaged with temperatures below zero, and does not want to risk my comprehensive protection, if then something happens and I do with ice colds. e with summer tires…. But I still have a question. With my buddy the steel rims rust each time on the car, you get the things in spring only by force again. With me the brake discs at the front and at the back were rusted already on the support surface. How can you now prevent the rims from rusting on the brake discs over the winter? Can you lubricate a little WD40 or a little bit of fat thinly on the support surface? because someone has another good tip? Don’t want to knock down the rims in the spring with the big hammer. Or should I ever put a can of rust-solver ready for the spring With my ancient wolves I never had the problem at all, not even at first there was a rim rusted…. sells Honda there any super-cheap-rust rims????