The praises some folks sing about LT tires are unwarranted, in my opinion because those tires will not carry the same load in 15" wheels that ST tires will carry. ST tires should be replaced every 5 yrs regardless of miles. LT and P tires should be replaced at 6 years according to Discount (not the 10 yrs quoted elsewhere.)
Discount tires who doesn't make or manufacture tires nor do they have a enginering staff, has no say in how many years a LT makers recommends them before replacement. That info come's from each tire manufacture like Michelin who says this from their webpage;
michelin Q&A
"What is the expected service life of tires?
While most tires will need replacement before they achieve 10 years, it is recommended that any tires in service 10 years or more from the date of manufacture, including spare tires, be replaced with new tires as a simple precaution even if such tires appear serviceable and even if they have not reached the legal wear limit."
I don't believe the average tire owner knows more about tires than a reputable tire dealer such as Discount. Anecdotal information is not helpful when compared to the much larger experience-base of a large distributor such as they. IMO.
Discount tire is not a credible source for tire tech. They simple sell tires.
Lots of folks pulling trailers (rv and non rv) know much more than Discount tire as they were doing so before Discount tires ever sold a tire. We simply found out the hard way what works vs what a tire chain store says should have worked.
Your very lite weight single axle trailer does not have the side stress problems (ply shear) that a multiaxle trailer has. Discount tires wants to sell you a tire and can easily fill your trailer needs.
