Quote:
At what point will a truck tire burst from overinflation?
Most new or undamaged medium radial truck tires can withstand three to four times the recommended pressure before bursting. In fact, the rim usually fails before the tire. ITRA has conducted several burst strength tests on new and used medium radial truck tires with special reinforced rims. The tires were pressurized with water. Most recently, three new tires and 13 used tires were "burst tested" with the lowest pressure burst recorded at 300psi and highest at 540psi for an average of 420psi. All of the test tires failed in the bead area.
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Tire pressure mpg tests - tire inflation - Page 2 - PriusChat Forums
http://www.officer.com/web/online/Editorial-and-Features/Driving-Under-Pressure/19$27281
I dunno, if you google it the results should be the same as when I google it.