I fix all our own tires. I have a tire hammer and spoons and the proper tire tools. We also have five tire machines. I use a 1940,s Coates iron tireman with a phnumatic bead breaker and a Bishman the most. I have a manual coates . and a coates 20 -10 and a jim beam rim clamp haven't used use them in years. there are a lot of tires you would never get them to break down by driving on them. Old radials on safety bead rims are a example. as tires age the bead shrinks and gets tighter. and the sidewall on radials is not stiff enuf . Sometimes a radial even on my iron tireman will not break down. That's when I use a tire spoon and a 8 pound hammer. a tire really stuck you can set it out in the sun and squirt diesel on the bead. after a few hours the rubber will start to soften making it easier to break down..