I thought the wheels were just left polished after about '07 because of the clear coat problem.. With that low of miles and still under warranty, I would show the problem to your dealer and see if it can be replaced..
My clearcoat is actually pretty good though.. I have a very early model, and have 56,000+ miles in all kinds of weather.., well I don't have a snow problem down here, but, while the clear coat does have some spider webbing here and there, overall it has held up really well.