I think this forum is dangerous

4X4Dodger wrote:

Slowmover wrote:
ST tires are the problem, not country of origin. Theyre fine for something other than a travel trailer. Speed rating is too low (like running a motor at redline) and against law to use on passenger vehicle. Quality is not inherent. As has been speculated, their recent invention means longer productive life on worn tire making machinery.

Spend a little more and upgrade to LT.

I am sorry but this idea you put forth shows a complete lack of knowledge of the FACTS. Keep in mind as you read it Every tire Mfg will say the same. This idea that ST Tires are somehow a "lesser" type of tire is just Flat-Earth-ism.

You can find the entire paper at: ST vs LT Tires

From: Carlisle Transportation Co. (I have posted this previously)

Use the Right Tire

Trailer tire requirements differ greatly from automotive or light truck
tires. Trailer tires are designated “ST” for Special Trailer tires.
Automotive tires are designated “P” for Passenger or “LT” for Light
Truck and are not designed for trailer use. Passenger or truck tires,
with their more flexible sidewalls, can result in trailer sway problems.
The stiffer, heavy duty sidewalls of ST tires are designed to control
and reduce sway problems. Trailer sway is dangerous at higher
speeds, with top heavy loads or on vehicles with inadequate
tongue weight.
– Trailer tires are designed for use on trailer axle positions only.
– Do not use P Passenger or LT Light Truck automotive tires
on trailers.
– Do not use ST trailer tires on passenger cars or light trucks.
– An "LT" designation, when shown on a trailer tire size specifies load
range only, it is not designed for use on light trucks.

The ST Difference

The construction, design, materials and testing used in ST Special
Trailer tires meet the higher load requirements, duty cycles and
special demands of trailering.
– Polyester cords in an ST tire are bigger than in a comparable P or
LT tire.
– Steel cords used in ST tires have a larger diameter and greater
tensile strength to meet additional load requirements.
– ST tire rubber compounds contain chemicals to resist weather and
ozone cracking, particularly conditions resulting from extended
storage and the unusual duty cycles of trailer tires.
– The slightly shallower tread depth of a trailer tire reduces sway and
rides cooler, which adds to tire longevity.
– ST tires feature stiffer sidewalls, especially in the lower
section which:
– Reduces sidewall flexing causing the trailer to track straighter.
– Diminishes the risk of trailer sway.
– Lessens the risk of sidewall puncture and blowout.
– ST tires generally offer approximately 10% percent more load
capacity than a similar LT tire and nearly 40% more than passenger tires.

You've refuted nothing. And if you want cheaply made and unsuitable for any passenger vehicle PLUS real problems with load and heat, you are welcome to them. Not so many years ago there was no such thing as ST. LT was all we had. And they are a better choice for a travel trailer. Good luck