ST tires have really stiff sidewalls that give more ride stability, especially in the wind.  ST tires roll more smoothly with less tread squirm resistance and the tread deflects water well avoiding hydroplaning and giving a much more stable tracking behind the TV.  Additionally, the smooth low resistance rolling will give better gas mileage, since the TV doesn't have to work as hard to overcome the rolling resistance of the more squishy and tread squirming LT tire.  

Given a choice, I would choose ST tires.

We have had LTand ST models- China bombs and top name brands alike.

Once we tried Goodyear Endurance about 5 years ago, we have had no issues and are just about to replace them due to age.

They never lose air, have long tread life and have noticeably  stiffer sidewalls and weigh more than other comparable size tires.They are competively priced  and available in 235/14   

I have no problems recommending them and will continue to personally use them 

Vann

However, with the info you all have posted, will be going with Carlisle Radial Trial or Goodyear Endurance both load range E special trailer tires.  Carlisle $135 and Goodyear $199 at Discount Tires.  Big difference in price.

My new camper came with the Carlisle Radial Trails. Due to some axle issues, I had to replace all four tires after just 10K miles. I was going to go with the Carlisles again but decided on the Goodyears at the last minute. I went with Load range E as well. I also got them at Discount. I had them balanced and told them to torque the lug nuts to 95ft-lbs. When I got home I inspected the lug nuts and about half were under torqued.

It could also be that with the alloy rims, they may have been torqued, but loosened. That is why it is good to check torque after 50 miles. I don't remember off the to of my head, but it is also good to check them once a day at least until they stay torqued.

Also, even load range D tires are not immune to blowouts. We had that happen to us. I had noticed wear on one of the Carlisle LR-D tires and had planned to replace it when we got to our daughter's house on a previous trip. The tire did not make it that far.. I hope to never have that happen again. Our current trailer is a tandem axle model so the load per tire is less.

Our Escape has steel wheels and Discount is only 3 miles from our house so I think the tech just didn't do their job. You are right about checking lugs. Escape recommends anytime you change a tire/wheel, you retorque every 60 miles for 300 miles. I was seeing give in our lug nuts up to 1000miles when we first picked up our trailer. After that, the lugs were stable but I still check them periodically, at least before every trip. 

Originally posted by James07 However, with the info you all have posted, will be going with Carlisle Radial Trial or Goodyear Endurance both load range E special trailer tires.  Carlisle $135 and Goodyear $199 at Discount Tires.  Big difference in price.

Both the above are good tires although we had friends that had a goodyear endurance blow out (and took the fender as well) that was only a year old.  Regardless, the Carlisle has a warranty that is 2x longer than goodyear, something to consider upon your purchase.