So I've just cleaned the van, using the same products I've used on it since I got it and when I've been drying the wheels I've noticed serious contamination on one of them that wasn't there previously. I used the same products on all of them that are apparently "safe for black gloss wheels" literally just iron remover and soap. Never had any issues before and it's just on one wheel.
I've recleaned it twice but it's not going.
Any ideas what to do?



I've recleaned it twice but it's not going.
Any ideas what to do?




