What is this part? (link to picture included)

[Greenie]

Anyone know the name of this part on the inside of the wheel of a PT GT Turbo? Or is it just the wheel "flaking"?
Mystery part

[CREWZIN]

Yep, looks like what is left of a rusted thin metal gasket. I have the GT wheels and I take them off every once in awhile to clean them and rotate the tires and I don't remember seeing anything like that. Maybe Chrysler did put it on at one time or maybe it was American Wheels (maker of the wheels) that put it on. It could be it was put there to stop the wheel from freezing/sticking to the hub.

[Hooligan]

I read once that Chrysler puts a thin "washer" to hold the hub on until the PT get down the line for the mounted wheels can be installed. Maybe this is one of those "washers". They do not remove them and as they are so thin, they do not affect the balance of the tire/wheel.

[Greenie]

Thanks for the replies. The dealer told me it was the wheel "flaking off" which sounds strange to me. So I guess I just ignore it and not worry about replacing them?

Why would one wheel (the one with the most disintegrated thingymajob) have extremely rusted and corroded nuts & bolts? Is there something we should check?