Glad the one tire held for you Daniel. That would not have been a fun ride if it had blown! I've done that corn bin routine a time or two... not fun on a hot day! Hope you get some relief from the heat soon.
About 30yrs ago, I was heading up I65 to Louisville grain elevators with a 22,000lb load in this same truck. I had one right rear blow like a double barrel shotgun. I was going about 60+mph and immediately slowed way down. Was hoping to limp about 5 miles to a truck stop to have a new tire mounted. This was about 4am. Well, I went about 500' at 20mph or so & the other tire blew....BANG!! Man was that a rough ride for just a few seconds. Both rims looked like stop signs. So now I needed 2 rims and 2 tires. No cell phone back them days, so walked a few miles to a store & called home. The tire service we used had to locate me a couple rims (took a few hours), then had problems with their jacks raising the load. Finally got repaired & I just turned back towards home at 10pm that night. I was 1/2 way to the elevators, but too danged tired to finish the trip. Talk about a looooong day!