"ST" / "trailer tires are 5yr/60mo max life units
"LT" / light truck tires are 10yr/120mo + ave min life
do not trust ST tires past 60 months!!! EVER
my current flat bed is a 14k unit w/ drive over fenders and i have had similar issues w/ the 80 vs 85 profile issue
my farm tire guy says switch to LT when jumping up to E load range or greater and plan on a 10yr life w/good name brand tires
individual tire price doesn't take into consideration the mounting/balancing fees nor the major inconvenience of tire changes on the side of the road
NashvilleTJ , i use E-load range tires on my trailer w/o any trip surprises even when i've pushed the "specs"
View attachment 663314 crossed the scales @ 27,200 prior to a 300+ mile run in the August heat in Texas
needless to say the drive over fenders were tested on this run
IMHO you really only have 2 options based on your personal research & familial advantage
the Hankooks or GoodYears @ Discount Tire
DT likes selling ST tires because they double their labor income over a 10yr period/trailer
you asked for personal experience
since it wasn't me doing the towing i'll knot bother you w/ the loads of large round bales my grandson hauls on this trailer
btw ... i do like your trailer !
BON CHANCE
leon