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C5 chrome wheel problem

Beobachter

Well-known member
Joined
Nov 23, 2003
Messages
50
Location
MD
Corvette
2006 Daytona Sunset Orange Roadster 1961 R/W
04 C5 that has plating coming off all four wheels. Blistering under plating. GM says sorry about your luck. Anyone have this same problem? Please advise.
 
M

mvarga

Guest
04 C5 that has plating coming off all four wheels. Blistering under plating. GM says sorry about your luck. Anyone have this same problem? Please advise.
I'm surprised to hear that about an '04. My '98 has it a little in the tough to clean areas. I am the second owner and I don't think the original owner polished them or cleaned the brake dust off on a regular basis. Do you live near salt water???
 

Mr. Lucky

Well-known member
Joined
Aug 30, 2004
Messages
405
Location
Orange, CA
Corvette
2004 MY stroker Coupe

BugMan

Active member
Joined
Jun 8, 2006
Messages
37
Location
Miami Beach, Florida
Corvette
04 Torch Red Convertible w Black Rag Top & 6 speed
Are you sure you have chrome wheels? I mean could the damage you see be that the coating placed on the polished aluminiun is wearing off and the aluminiun is being oxidixed?
 

wishuwerehere82

Well-known member
Joined
Sep 6, 2003
Messages
2,314
Location
Rochester, NY
Corvette
Red '82 Coupe,Sebring Silver '98 Coupe
Part of the problem with chrome plating aluminum wheels is that when the wheels are in the plating bath, it is difficult to maintain adequate current density and electrolyte circulation in areas that are furthest away from the plating anodes. The areas furthest away are the corners of the spokes where they join to the rim. These areas consequently recieve less metal plated to them, or experience a weaker plating.
Since the plating process is a multiple stage process of electroplating copper, nickle, and chrome with pickeling steps in between to clean the previous surface, any amount of contamination caused by inadequate plating or cleaning can cause the surfaces to delaminate over time. And any pinholes in the final crome plating can and will cause the layers to oxidize between layers.
The result is peeling, flaking and pitting in the wheel.

Unfortunately, the process is irreversable. Since the etchants that are used to remove the plating to re-do the process eat up aluminum at a much faster rate than chrome, nickel, or copper. Once it's done, it's done.
 

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