XTS Wheels corrosion or ?

I bought my 2013 XTS-4 Premium almost 2 years ago, a few issues here and there. But, I noticed after getting the car washed yesterday that the wheels looked like they were still dirty. No, it's the paint/coating is rough. The wheels aren't chrome, so which would be the better option? Getting them re-painted or replacing them? I saw on another Cadillac forum that it's a defect, but those posts were from 2015 and none since.