Originally Posted by fanbelt.1

Yeah, perjhaps it isn't plated. Based on the level of finish (these are the Siamese-spoke wheels) I assumed it was plated. At any rate, the finish is gone, and a replacement is way too expensive.
I'd rathern not run for more than a couple of days with a spare.
I've leaned that the bolt pattern for HHR and Cobaly SS wheels is the sanme as for Malibu and G6. My body man will be able to find me a loaner wheel from one of those models that won't be needing wheels/tires anymore, at no cost to me....