how to clean hard to clean spots on rims

[DFB]

Here is the picture, I hope it is good enough, if not I can try next time I am cleaning them. It's not the rim rash

Looking at the image, do these wheels have a matte finish? I've found matte wheels don't repel brake dust like normal painted wheels, so it tends to embed into the finish. On matte wheels, the ceramic coating manufacturers recommend two layers being applied for this reason, which helps seal up the finish prevent/slow the rate of this staining from happening.

Sadly, quite often a good wheel cleaner or iron remover won't remove this staining. And being matte, you can't really polish either. As others have mentioned, at the very least start by using an iron-remover type wheel cleaner such as Carpro WheelX, NV Purge or Sonax Full Effect, you might get lucky. If you do go the acidic route, just be very careful, its probably not something I would recommend on matte finishes.

As for the gloss black wheels, they certainly need to be polished to bring back the clarity of finish. I'd then coat them to make cleaning easier, and therefore safer.

Good luck.

 

[sullysnet]

Looking at the image, do these wheels have a matte finish? I've found matte wheels don't repel brake dust like normal painted wheels, so it tends to embed into the finish. On matte wheels, the ceramic coating manufacturers recommend two layers being applied for this reason, which helps seal up the finish prevent/slow the rate of this staining from happening.

Sadly, quite often a good wheel cleaner or iron remover won't remove this staining. And being matte, you can't really polish either. As others have mentioned, at the very least start by using an iron-remover type wheel cleaner such as Carpro WheelX, NV Purge or Sonax Full Effect, you might get lucky. If you do go the acidic route, just be very careful, its probably not something I would recommend on matte finishes.

As for the gloss black wheels, they certainly need to be polished to bring back the clarity of finish. I'd then coat them to make cleaning easier, and therefore safer.

Good luck.

they are not gloss like the black ones for sure but I'm not 100 percent sure. Maybe that is why they seem different. The finish is unlike any rim I have had in the past. These were coated two times. Once in 2015 and once last year. The other three rims they got out the brownish color but one didn't come out as good. I guess I should ask what they used. I swore he told me it turned all that color to silver or gray. I had no clue what he meant. Part of me thought they got lazy in the end on one rim but maybe it's as much as they could do. Hope that makes sense but that's what I recall him saying.