For Polly carcass ST's, what is better?
My drum beats for the Provider ST poly carcass tire in load C/D/E.
These are one of the first new gen ST class with the higher speed ratings and first came out on haulers websites in the '10-11 era.
As far as the Carlisle HD having a issue I wouldn't suspect any tire based on a couple of tire complaints. Now if the HD start having complaints on all the trailering forums (rv and non rv) like the old made in the USA ST poly tires and especially the poly carcass load C/D/E china made ST tires, when they started coming over by the ship load ...then it can be determined how reliable they are.
The internet is still the best place to find info on how a tire brand or tire line is doing. This website is just one of the dozens of websites out here to learn how any product is doing......especially tires.