There is a company in Orlando called "Alloy Wheel Repair" that does this kind of thing.
They fix the curb rash in addition to removing dents from alloy wheels. My buddy (who sometimes posts in this group) had them take a large ding out of an alloy wheel on his car. I watched them do it. Set up in a trailer that goes around to dealers to fix dealer trades. To remove dings and dents he:
1. Removes the wheel from your car.
2. Bolts wheel in a support
3. Removes air from tire (but does not remove tire).
4. Measures wheel roundness with a micrometer.
5. SLIGHTLY heats the area of wheel with a torch.
6. Uses a hydraulic cylinder to push the dent out, VERY SLOWLY.
7. Re-measures wheel with a micrometer.
8. Pumped up tire.
9. Re-installed wheel and tire on car.
10. Only charged $125.00 and well worth it.
Completly fixed the wheel. Operator also said that he can remove "Curb Rash" and he can paint the area around the curb rash.
For those of you in the Orlando area (or anyone), here is more information.
Alloy Wheel Repair Specialists. A Mobile Commercial and Retail Service
Repairing and Polishing . Flat Bead or Standard Wheels. Bent Wheels. Wheel Faces. Polished or Painted Aluminum.
John Martin Owner/Operator Cell: (407) 733-9521 Fax: (386) 345-4471
www.awrswheelrepair.com alloywheels@bellsouth.net
Did a GREAT job.