Hey All, Total noob, trying to soak all this RV stuff in all at once. The Maxxis ST tires on my recently purchased 2001 TT "look" like new, but I don't know how old they actually are, so don't kno...
One reason for using ST tires is the load rating for the tire size. While LT's would be nice, often it is impossible to find a LT tire in the size for the trailer that will carry the required load. For example, in 225/15" tires, LT's are hard/impossible to find above LRC, while ST's are available in LRE in the same size.
Once you go to 16" rims then you can get LT's with LRE or higher so they make sense to consider.