[hypoxia]

Another consideration is the piping/hose size.  If you plan to use air to remove coach tires you need at least a 3/4" or 1" twin hammer impact gun which won't do anything unless you have at least 1/2" hose and lots of air.  I use a 1/2" hose for lug nut removal but you also need the large air chuck on the tank, hose and impact.  I have 1" shop piping to feed the 1/2" hose and can squeeze the trigger and let the 3/4" impact bang away for a bit until the lug nut starts to turn.  That's with a 120 gallon tank, 150 psi and a compressor pump that puts out 35-40 CFM.  A breaker bar is an alternative.