You’re talking about changing the tire on a rim right? Same rim, new tire. My Mexican neighbors do it all the time, don’t even have a tire machine, just long tire levers. Have to do the flash-pop trick to get the bead to seat on large tires sometimes.
The safety NCO in me just has to say 'that isn't very safe'. But yes, ether, or hairspray works to seat the bead.
If you have a running vehicle that can move, breaking the bead off the rim can be done by carefully driving over the old tire (not the rim), without the use of the tire tools. Also, not very safe, but it does work.
/johnny
No, I’m talking about replacing the tire and rim with the spare and rim.