Thanks for the responses. Let’s add some clarification:
I don’t know the specific tire failure mode. Was it a sudden blowout, or slow leak and the tire overheated, who knows? Like I said, I had no idea that I had a failed tire.
I do not currently have a tire pressure monitoring system. However, I am drafting a letter to Santa for an early Christmas gift…
Trailer tires are Michelin LTX M/S 225/75R16 LRE (Previous set replaced last year was LTX A/S, probably a better choice but not available when I needed them)
I replaced both tires on same side because I do not know how long I ran on a single tire, which was obviously overloaded with the other tire failed.
I have been a Discount Tire (and NTB) customer for over 20 years. Discount gave me a very good price on the replacements due to the 1 yr old tire failing and my long customer history. The store manager concurred the LTX M/S should be a good tire for this case. Thank you Discount Tire for helping me out.
My DW and I are planning a Yellowstone trip in two years for the family. I will have a TPMS and perhaps XPS RIBs or R250's by then on the trailer.
FYI: the truck has Michelin XPS RIBs 235/85R16 LRE