Photo of my Racing Hart 18's + TCP Quads that I picked up on Saturday...

The Racing Hart's are 18x7.5 et42. These are genuine Japanese made Racing Hart's that I bought in Japan and got shipped out to Aus (thanks to
PhillB Enterprises). Japanese Racing Hart wheels are unfortunately not made anymore, although there are cheap remakes/fakes available. This particular C4 model isn't the one-piece cast but the much rarer multi-piece forged model (the outer rim section is forged). Surprisingly light considering they aren't really a tuner/racing rim! I will try and weigh them before fitting, though I don't have access to scales.
More photos...



Unfortunately, although they look brilliant from a distance, up close on a couple of them there is some sort of corrosion/oxidisation on the lip/rim section of the wheel.

They are (I believe) anodized lips for protection and shine but although the wheels themselves are totally unmarked and have rarely, if ever, been used (they still have the 44,000 Yen price tags on them!) they have obviously been lying around for some time, and some sort of oxidisating has occured on the anodized surfaces. Anyone seen anything like this before??

I had a go at lightly rubbing some of the corroded sections and then polishing it with Autosol Metal Polish. Whilst this worked in removing the oxodization it cut through thr ano and left two types of (shiny) metal finishes visable.
Before-ish... (had a little go on the rim edge before this photo)

After...

Seeing that I can't remove the oxodization without removing the ano, I am now considering rubbing back the lips (with 800, 1000, 1200, 1500 then 2000 grit wet sandpaper) and polishing them up (then possibly wax them to seal). Its a very common method in bringing alloy wheels back to life.
Anyone have any other ideas??? Pretty sure there aren't any chemical solutions to this...
Cheers,
*3o3