I bought one of the slide hammer bead breakers, and only on a few tires have I found it to be helpful,
and things have to be fairly recent to make work,
many of the thing I work on have had tires on for 20 or more years, there have been times the only way to remove was to cut the tire off the rim, on my 6x6 the tires had been in place for over 50 years,
I have on really nasty ones taken the forks on the tractor and lift the front of the tractor off the ground and not broken the bead on the 20" 6x6 rim, and my tractor is a 9000 pound tractor,
but I have considered some thing like the C shaped frame with the Hydraulic cylinder, I have two of the manual rim clamp units, mine say do not use impact wrenches on them, I saw a unit that was designed for impact use, but it was about $600 the way it locks looks good, I have jsut felt that the price is a little more than I want o spend for my own work,
Pneu-Tek Bead Breaker - YouTube