Hello:
Not an expert.... I have had several BLOWOUTS in early days of RV (bumper pulls), lots of damage done. Once I started to pay attention to tires, no more BLOWOUTS.
"Looking good" tires will kill someone.
How old are the tires? You must check and read info in small window on wall of each tire. There will be four numbers like this.... 0416 in an outline. Now windows contain more letters. See web site Tirerack.com for information.
Trying not to be "judgmental", the need to lean more (we all needed to do this) is coming thru...
Others should be here to help with gaining knowledge. Good luck and for all our safety, continue your questions,