[dab1950]

Ok Padgett, you gave me an incentive for in-depth investigation on my own.
With your hypothesis of "Tread 5 plies; 2 polyester + 2 steel + 1 nylon",
I went to my local Camping World( just a couple miles north in Woodstock, GA.
That was an eye opening experience. I was able to inspect the labeling
on no less than 6 different brands of ST tires. Although, I didn't see any
Maxxis brand tires on any of the trailers, I did find Carlisle Radial Trail RH
ST225/75R15 LRE with the new DuraTrail logo. These had the tread labeling
"2 polyester + 2 steel". No nylon overlay! Another brand that was missing
the nylon overlay was Power Towing Sport ST.
Brands I saw with the extra nylon cap include; Karrier Loadstar, Trailer King,
Goodyear Marathon, Westlake Super ST.
Right or wrong, I'm glad I've got Maxxis on order and no Carlisle in my future.
P.S. I checked the current tires on the TM and on the boat trailer,
both trailers have a brand name "Duro" and no nylon overlay. The tires on the TM
are 6 years old. PO must have had a blow out on the street side. I can see
the frame support gusset(right behind the tire) is bent . Plus the tires are
15"s even though the DOT sticker from the factory says 14".
We do not have any lift kit but have not noticed any clearance issues in the
wheel wells.
Thanks for all the helpful advice.