I've got a crazy related story.
Bobby Jones worked for my dad in the mid-90's. One day a customer came in, needing a used tire for his truck. Jonesy grabbed a 16" LT tire off of our used rack and set it up on the Coats 20-20 machine. He got the tire onto the rim, hooked up the clip-on airline and positioned the tire so that both sides would bite on the rim and the tire would inflate. As the tire inflated he noticed that the bead wasn't seating on the rim. He sprayed some rubber lubricant onto the tire to help it seat on the rim. He left the air hose clipped on, hoping extra pressure would help the tire seat on the rim. At some point, the air compressor equalized pressure in the tire (160 psi into the tire) and would not inflate any further. Not sure if any of you are familiar with older tire machines, but the bead blew past the rim on the bottom side and severed the 2" shaft and coupler on the machine. At the time, Jonesy was leaning over the tire, trying to get the bead to seat. The curved edge of the rim hit him just above the eyebrow line and lifted him 4 feet off the ground (Bobby Jones was 6' 3" and about 250lbs.) The impact put about an 8", moon-shaped gash into his forehead, knocked him TF out and stretched him flat and the tire, rim, shaft and coupler hammered the 20' ceiling after blowing through Jonesy's head. Fortunately, there was a LAFD station across the street and the medics were there in about two minutes. They saved his life, he was in a coma for a couple of days and his right eye was pinned toward his nose for about a year.
I wasn't there at the time and the next day my dad was explaining and showing me what happened when I noticed that Bobby Jones was trying to seat a 16" tire onto a 16'5" rim.