Aluminum rim corrosion

B

BMWWW

New member
Hi gang,



My apologies if this has been covered, I've searched quite extensively, and no thread suggests any type of DIY fix.



In any case, I've got a set of the following rims, and all 4 came with corrosion on the machined lip. The rim itself is aluminum, so I'd assume the lip itself is aluminum as well.



Are there any DIY steps to fixing it? These are my track rims, so I'm not too afraid of salt getting to it, and the end result doesn't need to be 100% either.



Would I be able to sand it down with say, 1500-->2000, and then repolish with OHC-->OP?



Any concerns with the bare aluminum (protected by say, Collinite 845?)



are-23185780_w.jpg




Thanks!
 
Bump, is this doable with wetsanding and polish? (I've got the entire Optimum arsenal and IP/FP106ff)
 
Those rims look like they have a clear coat on that section, do this first. Get some polish and a clean rag, wipe that area and tell me if it comes back black...they will tell me if they are clear or not



Zephyr Pro 40 is one the best site for any metal polishing.
 
beemerboy1 said:
Those rims look like they have a clear coat on that section, do this first. Get some polish and a clean rag, wipe that area and tell me if it comes back black...they will tell me if they are clear or not



Zephyr Pro 40 is one the best site for any metal polishing.
Click to expand...



Should've added: I've tried polishing them with both OHC and OP, and while the visible chrome becomes brighter, the 'rough' patch is more or less the same.



Gracais.
 
BMWWW said:
Should've added: I've tried polishing them with both OHC and OP, and while the visible chrome becomes brighter, the 'rough' patch is more or less the same.



Gracais.
Click to expand...



did the rag turn black? that's the important part for me
 
beemerboy1 said:
did the rag turn black? that's the important part for me
Click to expand...



I don't recall the color of OHC or OP, but no, there was no excessive 'sweating of black' as when polishing bare metal. (Like when polishing the back of an ipod)



Thanks again!
 
BMWWW said:
I don't recall the color of OHC or OP, but no, there was no excessive 'sweating of black' as when polishing bare metal. (Like when polishing the back of an ipod)



Thanks again!
Click to expand...



Then that tells me that the rims have a clear coat on them and its not in just the metal..it looked that way to me in the pics.



Not a lot can be done with chipped clear unless you have them re-cleared
 
beemerboy1 said:
Then that tells me that the rims have a clear coat on them and its not in just the metal..it looked that way to me in the pics.



Not a lot can be done with chipped clear unless you have them re-cleared
Click to expand...



Understood. Are there drawbacks of just sanding all the clear off, and polishing the bare metal?
 
Going to need constant maintenance just like an exhaust tip. Only a lot worse since it sees brake dust. I would definitely look into some sort of clearcoat or sealant.
 
i'll see if i can find it but there is something i seen recently that is can be used to clear rims and stuff.



You will probably need to sand it really well and then possibly take it to a good auto body shop and have them clear it. That might be a way to do it
 
These are my 'fun' rims, so I doubt I'll clear them.



So long as its like the maintenance of an exhaust tip after I wetsand and buff, then that'll suite me just fine.



Thanks!



Any recommendations as to which polish I should get? (must be from eshine). I already have the normal OP/OHC/IP/106ff for my buffers (rotary and PC).



I have another post in this section with the selection at hand.
 
Clear coated rims. The whole rim is cleared, so you must make a decision to only do the lip or whole rim.



Very common with alloy rims. The clear gets compromised and the alloy oxidizes under the clear and starts to peel.



Only way to fix is remove the problem areas and respray. Or if you want to try and only remove the lip problems, tape off well and sand blast or die grinder or Dremal. Paint remover will probably bleed into the other areas.



You could then polish the alloy, but it would be an ongoing project. Best to reclear.
 
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