More/better pictures would help us better understand what you're working with here. Some factory Porsche wheels are chrome plated (it was an available option), but it's not clear what you're working with here. The reaction to the metal polish (you didn't state what kind of polish you were using), suggests potentially bare aluminum wheels, which is really rare for original equipment wheels, as it's labor intensive to keep looking good (requiring periodic polishing to remove tarnish).
I'm not sure if chrome plating on wheels, if that's what you've got, could potentially react in the way you are describing to the unknown "polish" you are using. Generally speaking, chrome is pretty durable and chemical resistant.
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2001 Boxster
Last edited by jakeru; 04-27-2017 at 07:58 AM.
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