Clean them really good and then apply a thin coat of paste wax.... don't forget to buff!

Thanks, man!!

I use Cape Cod Polishing cloths on all my chrome elements, they do a great job

as well.

Would an additional treatment with paste wax help ?

Thanks again!!

Yes, the wax would act as a barrier to the elements. You could also apply a thin coat of clear lacquer. Both will wear off, so you'll have to re-apply but not for a while.

Any more suggestions?

My Supra did the same thing, and I don't think wax will do much for the shell but I'd use it - maybe it will help. I'd like to get mine re-chromed someday.

It could be that the aluminum shell has a hard time being chromed. Maybe the aluminum expands and contracts more than the chrome does and becomes separated. Painting or coating aluminum, because of it's odd characteristics, is always challenging.

I like Mequire's Cleaner Wax over the others I've tried, and it will help on the lugs, rims and other hardware.

I used some "Nu-Finish" automotive polish. It comes in a bright orange plastic bottle. You wipe it on. It dries almost instantly. You wipe it off with a dry cloth. That's it. Great stuff and super easy to use!

Thanks everyone!!