>>1996780>>1996771>>1996759There is a trick to tires that most people don't use.
The tire bead sits on the hook of the rim. You can push it off into the well, which has a smaller circumference, and this creates slack. Installing or removing tires, this technique of working around the wheel with your hands, constantly pushing the bead off the hook and into the well, should be repeated with every little bit you leverage on or off. Do it over and over and you will get more slack each time.
This allows most tires to be installed without levers, and the rare seemingly impossible tires become possible, with levers.
Many repeated flats are caused by tube damage from levers.
This is what you should have shown the curmudgeonly boomer.