I worked in the tire shop at Montgomery Wards when I was in college. When they found out I knew how to safely do split rims I got them all. They got me a couple of short lengths of chain and the use of one of the lifts. I liked it. They never rushed me. I did my '40 3 ton International with 20" splits in my driveway and still have a 16" set for my '53. There are several styles, some better than others. Compared to the speed of modern tire machines it's just not worth it to most shops. Special knowledge and tools are required. No one will mess with rusty old rims. There is danger in all tire mounting. I saw a guy die and his helper badly hurt doing stupid stuff with a rusty old spit.
