when they put the tire and rim on there machine it blasts a huge volume of air into the tire causing it to seat, the starting fluid does the same thing just not as safe to do, the whole fire and starting fluid combinationsounds bad and i did not want to do it till i saw it done, after that i would not have a problem doing it on a good rim with a good tire just a small boom and the tire jumps up a little.
http://www.youtube.com/watch?v=5_e1suUBoT0