I used Meguiar's Hot Wheel Cleaner on my Audi wheels. I followed the instructions using it in a cool area and not letting it sit longer than 15 seconds before hosing it off and it left these stains on my wheels. I searched Meguiar's general forum and several others have had this same issue with this product. The stain just looks like water stains - as much as I scrub, it doesn't go away but I haven't used anything beyond normal auto wash and also tried spraying Sonax wheel cleaner. The stain is most noticable on the machined lip but is also on the spokes as you can see in the pic below. Before I get a little more aggressive, what should I try? Anyone else have this issue from wheel products?
