If you can provide the first 2 characters of the DOT serial I can tell you the plant they are made in.
I assume from your comments you do not have a TPMS that would provide warning of air loss.
" are actually "Run Low Flex Failures"
is a post on why "Blowouts" are a major concern to RV owners but with suggestions on how to avoid this type of failure.
I write a blog on RV tire application and safety. RVTireSafety.com
Also give seminars on tires at RV events across the US. 40 years experience as tire design & quality engineer for major tire mfg. Freelander 23QB on Chevy chassis is my RV