We used to use a place on 500 south and about 3000 West. They'd pay pretty good, but that was 5+ years ago. You can call around and see what each place is paying, I will say I doubt you'll get very good prices because wheels would be considered "dirty" aluminum. If I remember right, we'd get less than half of clean aluminum pricing. There's also other factors that determine the price (we'd get more per pound for sheet than we would for tube, for example).