Reply #2: That also happened near here, not long ago.

[EST]

Old john deere type rims, tubes often leaking calcium, tend to rust through. The tire changing guy, careless because of long experience, over pressures the tire to seat it and the rim splits, not really exploding, but allowing the tire to grow in width, suddenly-explosively, catching the inattentive tech. In this case, crushing the guy's chest. He, too, was young, mid 20s, with children, working a low paying job, and no safety cage.