Back in the 60's, tire shops had this thing that went around the circumfrence of the tire. It was pulled tight and air pumped into it to force the sidewalls out to the outer part of the rim so the bead would seat. With the new tire changers all having air blasters, this other tool seems to have disappeared. However, I have my own changer and balancer as we do a lot of tires. Sometimes, we need that tool as the air blaster just won't help. Today my son brought home 7 tires on rims that had been on a mobile home frame for years and had gone flat. We got all of them to take air but one and we just could not get it to seat. Sometimes with a new tire, I have to force the bead on one side of the rim with the bead breaker just to get the tire mounted. Anyone know a source for the tool I need?