I do all my own tires from the wheel barrow right up thru the wet rear tractor ones. If you know what you are doing none of it hard really and no question it not only saves time but money doing my own.
Have an older Coates 2020, can do most widths up to 16 inch rims. I have to be careful with aluminum rims that the bar don't chew up the lip of the rim as it slides around. I don't worry about balancing anything I repair. If its off the pickup or such, since I always mark the tire/valve positioning before I do anything to any tire, I know exactly how they were originally positioned. That little bit added by a small boot plug isn't going to cause any issues. New tires for the light duty vehicles get mounted where I buy them and are balanced at that time. For the ones that the machine can't handle, have something rigged up to to lay them on and hold them in place and then I do them by hand. I use a lot of my tools for the large tires for some of this, from irons to my bead blaster. Anyone buying a machine to do the smaller wheels, I would recommend one of those new style that clamps the rim and doesn't damage the lip by dragging on it like my older one does. They can also do the larger 17 inch and up wheels for automotive apps. Seems with much of that Chinese stuff you get what you pay for, and parts in the future is something I'd be concerned about. My Coates may be old and outdated but I can still get parts for it.
As for semi tires, I don't find them hard nor do I do a incredible amount of them, and my advice would be unless you are going to be doing lots often, I wouldn't be going after a machine capable of doing them. If you want to see how quick and easy they can be done by hand, watch someone with a lot of experience. My only issue it picking the dam things up off the floor afterwards lol. I need to devise myself some kind of a lift! I also have a lot of tube type, most mounted on multi piece rims, those you pretty much have to do yourself as next to no one will touch them in a tire shop anymore.
I couldn't say how many irons I have, lots of long and short ones, and also have several special ones for the lock rings of different styles on those multi piece rims. Have the pump for the fluid and the fittings for the same. Also have one of those Esco manual bead breaker, works great. And something else that I use a lot that not many have and that is a large Branick tire spreader, almost a must if you are going to be putting boots and patches inside tires.
The other thing you gotta do if you want to do your own work and that is have the proper supplies. Good stuff, not the crap Princess auto sells. Go to an outfit like B-line, Canadian Wheel or whomever is local, or catch one of their trucks when its in your area, way cheaper than tire shops for things like patches, boots, tire tools and more. Thats who supplies the tire shops in the first place. And it is all quality stuff. One thing never to overlook and that is a pail of Murphy tire lube, I use it on almost everything, just makes things go so much easier coming or going.
B-LINE TIRE & AUTO SUPPLY - Tire Equipment & Supplies, Automotive & Carwash Supplies, Tire Repair - St. Albert, Alberta, Canada