I believe it has been said all along that there are issues with the stock rims, both with chrome peeling and bad seals as a result of the chrome peeling or something along those lines.

I would get the basic stuff checked first, but if it is a rim, it may be time to consider some new wheels. You could probably locate a used stock wheel for not too much money via eBay or salvage yards. Or, you could spend a little more and get some cool after market rims that look better than stock anyway!!!

Bart