The chrome plating on RV wheels rusted?

the best place to try to find the answer to that question is a big rv store, some bigger dealers, have a showroom full of all kinds of rv up grades, and cost is the reason for cheap plating over polished alloy. camping world is an online store, you can try there, and see if they have anything, you may have to buy a set of alloy rims, from experience, any kind of rust inhibiting paint, is a short term solution, and the chemicals are actually illegal in some states for cancer causing risks, (just for your information) best of luck