Watched some dudes here in town at a tire shop do that with propane on a tractor tire. First they heaped GLOBS of axel grease all inside the bead.

Hit it with a torch and B O O M !!

when that bead seated, them dudes had hunks of grease the size of pork chops in there hair and beards. ðŸ˜ðŸ˜ðŸ¤£ðŸ¤£ðŸ¤£