Rim Wax?

Any metal polish that says it will work with chrome will do the trick. I've tried about three different ones that you can get from autozone and I liked Blue Magic metal polish cream. It's this blue wax stuff that makes my chrome look amazing. It stays clean way longer than if I just use water and elbow grease.

http://www1.acehardwareoutlet.com/(...roductDetails.aspx?SKU=8110769&Source=froogle


You can probably get it from autozone, its worth a try.