I had a blow out on I-25 in Wyoming about 1983. A passing car pointed to my rear tire. I didn't know the tire had blown. I had a 1980 light duty F250 with straight 6 cylinder 300 cu in., unkown capacities. Four speed manual with granny gear. I was packing a Tejas 8ft cabover of unknown weight. 7.50X16 bias ply tires. Pulled the spare out and replaced. Bought a new tire somewhere, either Wheatland or Cheyenne. No, it wasnt Wheatland, thats where I had the exhaust manifold doughnut replaced and talked to the hot city girl that moved on a ranch. Seems I had a flat on the way back south too, that was repaired at a tire shop at quitting time. A 12 pack of Coors helped.
I had another blowout in 1967 in my Moms 1965 Impala trying to see how fast that 327 would push it.
Why?
edit add: I'm seeing a pattern here. Abuse your tires and pay your dues.