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I just purchased a 2016 c7 with the spice red design package. It has what's described as chrome Motorsports wheels. I'm trying to find out if they are actually chrome plated or are they polished aluminum. Looking back at sales information from 2016 I see them described both ways. I want to know what to use to polish them.

If they are polished aluminum can I use and aluminum wheel polish or do they have some kind of coating on them? If they are chrome can I use a chrome polish?

I who would hate to attack them with the wrong polish and do some damage