The big easy for myself doing tyre work came with the tubeless tyre, plus the handy little 3 ton or 5 ton mini diggers I can push off rims and rubber easy on dump trucks,but i have been doing it for hell of a time, the weight of tyres has changed over the years, some old Rubber inner tubes and flaps would be near the weight of the casings (tyres) that you get these days due to the lack of natural rubber in there build up, the CAT style wheel is very common on a wide range of equipment, this has a safety wedge that has to be hooked up correctly before inflation, a 23.5 case pressure is usualy around 50 psi, if you go shoving things at the rims like excavators always make sure the steering locks or safety bars are in place, tyre work is tough going in earthmoving, but its worth getting your hand in to save cash and time.