Aluminum wheel damage vs. temperature

I'm hoping some of the welders out there can give me an informed opinion. A friend of mine has a Dodge pick-up with aluminum wheels. It was in the shop Friday, and as he was driving it home, one of the front brakes was dragging. He didn't know it until halfway home on a 30 mile trip. He noticed it was driving "funny", and when he got out to see if he was getting a flat, etc, noticed the brake rotor was hot. Glowing orange hot. Now he wonders if that much heat would damage his wheel. I know that aluminum loses strength rapidly with heat, but don't really know any specifics. We're wondering if the wheel should be replaced.
Thanks,
Bill

AL does not show heat patterns like steel does. Most wheels have a protective coating on them and that would show how much heat was applied to the wheel. I don't think it will be enough to cause problems as there is a air gap around the heat source and that should be enough to insulate the wheel from heat damage, just like roof thimbles help wood stove pipe. In this case AL would do alot better than steel as AL would dispitate the heat faster than steel.

I would look at it twice tho, just to make sure you don't miss some heat damage on other parts.

T_Bone