I use Michelin XPS Rib tires on a gravel testing plant trailer that goes to a lot of mine sites. There we have all sorts of puncture and ripping hazards. Then we also use it at the normal flow of traffic on rural Arizona Interstate highways and rural Nevada highways, as well as on gravel and dirt back roads of varying quality. (I use the word "quality" in a highly variable sense here. ) We replace the tires on a nine year schedule, though they retain more than 3/4 of their tread. When not in use, we store the trailer indoors where the temperature does not exceed 90F except during power failures. (That's to preserve equipment, not the tires. ) At the end of nine years, there is only minuscule evidence of sidewall cracking, though that can be chalked up to being out of the sun. Tires in direct sun will behave differently. Even so, a nine year run is four years beyond what is "normal. " The sidewall rubber compound on the XPS tires may be more resistant to UV and heat because (1) they can be regrooved, and (2) they are designed to be retreaded multiple times. Using a better rubber compound would make sense there.
During those nine years, we never had a flat tire of any kind, although the various tow vehicles did. Parking the trailer for testing work usually involved sliding the front or rear tires as we near-jackknifed the trailer. This created no problems. Towing and tracking behind the tow vehicle was always predictable and stable.
I am normally required to buy the least expensive tires that will fit, with the lowest-cost retreads preferred. That's unless I can justify otherwise. I have never had a problem with justifying an all-steel belt and sidewall tire for this use. We did not consider using the traction type tires because we didn't expect much advantage on a trailer, and there would be slightly more rolling resistance.