About 2 weeks ago I took the wheels off my 1931 Tow Truck to a large truck tire shop and asked them to demount the tires off the rims so I could have the wheels powder coated and put new tires on them. These are the lock ring type wheels which I don't consider extremley dangerous if handled properly. They wouldn't touch them because they were to old. So I spent 2 days removing them myself. I had to break the beads off the rims by driving my truck on to the tire numerous times. Any way I got them powder coated and new tires on them. Some of these shops just don't want to be bothered with old wheels and tires.
Good Luck
Cleon