Do alloy wheels have a finite life?

Do alloy wheels have a finite life? For some reason I think I read somewhere that they do and can become porous over time. I cannot find anything obvious relating to it on the web though.

Asked on 22 January 2013 by briscs

Answered by Honest John
Depends. They can do. They last better if they are painted than merely polished and lacquered.
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