[sawman]

helps to break the tire off the bead on the backside by using a high lift/handy man jack.you can put it down and use the botton on the tire as you jacking up something heavy as soon as you start jacking,push the top of the jack forward to get the flat base to slide between tire and up against rim,might take a few times,but never had it not work,alot of 20 in tires i did,solid ring/split ring are not that dangerous,if you feel unsafe put a chain around tire through the rim center,the 2 piece split rim,is the widow maker,had a friend loose his arm airing one of those up,always put the split ring/solid ring back on in the same place,