Statistically speaking, from what I've researched, the odds of being involved in a fatal accident where the true cause is blowout/tread separation are about the same as getting struck by lightning. And imagine how many craptacular vehicles are out there with underinflated tires that haven't even been looked at in a decade.
If my math is right, at 55mph a 32" tire spins at 600rpm. That's about 163g pulling away the tread. I never drive faster than that.
110mph will be 1200rpm, which equals 654g. Which is 4 times the G force. What if I spin the tires on a jack stand to 110mph and see if the tread flies off? If it doesn't I'm good at 55mph then. That's 4 times less Gs. :tongue1: