After I managed to bring my SLK (R170) 200 compressor through the TÜV from 2002 to 2024, I got on the rust-infested wheel runs. I was surprised that solid metal appeared when sanding off instead of more or less large holes. I only looked a lot worse, which is why I had already bought wheel treads for welding in. I don’t need them now. Before I then split the sanded parts and then to the paintrs. to give my trust Uwe + Matthias, I would like to know if anyone can give a special recommendation for a rust protection primer. I would use Fertan rust primer. The paintrs say it doesn’t matter what you take, the rust comes again and again anyway… Or is there a remedy…?