Alloy wheel corrosion?

rosehonda, Sep 21, 4:59am
I have some alloy wheels I am wanting to tidy up. Some info on the internet but hoping to hear what people have personally tried and had success with.

I assume the 'dish' bit was originally painted not just clear over alloy? It seems some people just sand it back through the clearcoat. I read if you sand it then clear coat it, it will just corrode again because getting the clear coat to stick to alloy can only be achieved in a factory finish?

https://trademe.tmcdn.co.nz/photoserver/full/413454528.jpg https://trademe.tmcdn.co.nz/photoserver/full/413455060.jpg https://trademe.tmcdn.co.nz/photoserver/full/413455298.jpg https://trademe.tmcdn.co.nz/photoserver/full/413455557.jpg

dave653, Sep 22, 12:05am
Job like that I'd at least sand it well, repaint then reclear.

gunhand, Sep 22, 12:53am
Yes you can restore these to factory look. However, it is a time consuming process depending on how its done. If you presented these to a paint shop already stripped you will halve the cost. You would need to have them media blasted to remove all the paint and primers on them now. If you have issues under the paint you can see you can bet there will issues forming waiting to break through.
Assuming you got wheels nicely blasted (not to harsh a finish) the painter would then clean them up, fill any nicks etc. Depending on painter they may etch then prime then fill. But once ready base and clear. Getting the "not to shiny" look isn't that hard if you know what ya doin.
The time will be in filling and re priming or stripping manually (yuk).
If they were nick/scratch free then it would be, Etch, prime, paint all in one hit. i:e wet on wet.
You would have to love these mags to have them redone correclty as you could prob buy a new set for the cost of doing them. Or they are really expensive ones for a start.

kazbanz, Sep 22, 12:58am
rose Honda--I don't disagree with gunhand. But you do need to move pretty fast once you have the wheels back to clean alloy.
The reason being that they corrode pretty fast.
What happens then is that there is a thin layer of corrosion between paint and wheel and the finish bubbles up like rust.

berg, May 22, 5:07am
Soda blast (doesn't damage the alloy like sand blasting) then off to a painter or powder coater. With my deep dish hotwires I had them soda blasted, powder coated then had them sent to an engineer who cleaned the dish and rim edge in a lathe before getting them to a painter who clear lacqured the dish and edge. The result was stunning.