It was suggested on my Fiero forum to use oven cleaner.
Simply amazing ! I know I spent two hours working on two rims. Only to need more and more work/rubbing, especially in the recessed areas. So I sprayed oven cleaner on them. It foamed up white, as normal. I could see the stuff work. Where there was still old coat, the white foam started to turn yellowish brown. I left it to work for a couple of hours, as per oven directions. Then I blasted them with my pressure washer. Came out like new. I then did the other three wheels. Between spraying on the oven cleaner and pressure washing the rims, I spent probably 15 minutes.
Originally Posted by PROJECT 23
I would stay away from using a fine tip with the power washer. I used one on a set of wheels that I had and some of the chrome flaked off
I have seen that happen with cheap chrome jobs, even bumpers. I did not use a fine tip, but was ready to. My 40 degree spray tip did the job just fine. I can testify that OEM Laredo rims have a quality coat of chrome on them. My 28 year old rims do not even have any rust on them. The CJ is rust free though, having always been in Texas (away from the coast).
I tell 'ya, try oven cleaner.