it wouldnt hold air without it.. you use the heat to soften up the tire beads, so it can hold air..
Getting the tire on the rim is the easy part of stretching thats no biggie anyone can do that. its the inflating it thats the challenge. and it also depends on the way the rim is made.
but it was actually starter fluid.. but ether or starter fluid will work...
they mount and sell tires good prices, im trying to spread the word!!!