From the OP: the answers to above questions:
(Q) Blowout happened how long after the pothole? (A) Immediately after hitting the pothole.
(Q) What kind of tire? (A) Hankook LT 235/85 load range E. I had used those for a few years until one blew out in 2014. The newest (2013) Hankook was kept as my spare. I had recently swapped it and the Sailun because the Sailun was getting bald on the outer treads, and I hoped the Hankook was good for "one more trip".
It may seem odd that I was running just one Sailun, but I didn't want to go far without a spare after the 2014 blowout in a rural part of Oklahoma. The only tire shop in the area had only one tire of the right size, a Sailun load G, so I bought the one.
