I was involved in at least two discussions on tires in FB RV groups today. I did a little research for posting in them which I will share here.

I suggest you read this: http://rvingwithmarkpolk.com/.../trailer-towing-st-tires.../
Here are a couple of applicable paragraphs:
“ST Tire Life Expectancy:

It is quite possible for a tire to wear from the inside out. What this means is you cannot see the tire’s internal wear and fatigue and without warning you have a blowout when you least expect it. I mentioned a moment ago that under-inflated tires cause excessive heat resulting in tire failure. The same is true of an over-inflated tire when it comes in contact with pot holes, curbs and other common obstacles found on and alongside the highway. It is totally unrealistic for RV owners to expect ST trailer tires to last as long as P or LT tires do. ST tires are subjected to more weight, more sidewall stress and more user related tire issues, so it’s only natural they won’t perform as long as automobile tires.

If you think about it, with the exception of defective tires, all of these factors that increase the chance of tire blowouts are within the RV owner’s control. If you take the steps required to avoid these tire related problems it is quite likely you will not experience abnormal tire blowouts on your trailer."

This is also an excellent read, but many will discount it because of the source: http://www.carlisletransportationproducts.com/.../Trailer...

Tires always seem to become a hot topic; so,let the fun begin.