I saw a film in the Air Force where they put a pickup on a dynamometer with low tires (only 10 pounds low IIRC) and you could watch as the heat built up in the tire until it reached the vulcanizing temperature of rubber. with smoke billowing the tread came off and then the tire blew out. I think the film was put out by one of the tire companies but I don't remember which one. (I think it was Firestone) I was teaching driver's training (for military vehicles) and showed the film to the students to illustrate how important it is to have the correct tire pressure. I talked to a factory rep from Michelin and he said that Michelin recommends inflating the tire to the pressure on the side of the casing. I almost always run Michelins and have followed that advice and gotten amazing tire life - (70,000 -80,000 miles)
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