I have no idea why this is so hard .
Despite numerous threads comparing LT tires and ST tires there are still some that will not admit that an ST tire is inferior to an LT tire that has the same weight rating posted on the sidewall .
Smkettner , Jimnlin, Huntindog , and Gmwphotos , clearly understand in depth why an LT tire is a better replacement for an ST tire .
There was a recent topic started by Partymarty that compared Goodyear tires sized 235/85R16E . One was an ST and one was an LT .
The ST standard rated the ST tire for 3640 # and the LT tire for 3042 # .
The ST tire sold for 80 % of the LT price .
The ST tire weighed about 80% of the LT tire .
The ST tire is placarded " for trailer use only " .
No disclaimer for the LT tire .
The ST tire is based on a 65 mph max , and the LT is 99 mph .
The maker was Goodyear in each case .
A logical conclusion is that the ST standard is a weaker standard .
As to liability :
The buck stops with us .
I have Never seen a post where one of these fellas posting about a blowout has said that he is suing the trailer manufacturer .
So it is up to us to analyze the situation and install the safest tire we can .
Those posters who wish to cloud the available solutions with their gobbled-gook are doing a disservice to the forum members who have a genuine problem and are seeking a real world solution .