For something scary see
here.. Note particularly the difference between nylon caps and an overlay.
Part of the problem with all of the horror stories you see on the web is that the majority are "worse cases": overloaded/underinflated/overspeeded/overage and underinspected.
Tires are a lot safer/better now than they were a decade ago but "the Internet is forever".
I believe that 205/75R15 LRD is the right tire for my 2720 particularly since I tend to lower things and not raise them. Do believe that if I need to replace the axle at some point, I'll go to a 5,000 lb rated unit.
Meantime with a rig I always try to "drive gentle" and also tend to cover very long distances in a short time while doing so.