I can't give you personal experience with that tire. I buy and install a lot of tires at work and bubbled a lot of trailer tires with heavy rigs.
That said, my tire dist also said there having good luck with the Carlisle radial trail RH.
I have a large 5er I run bridgestone r250. Love um.
Last summer got a 20' tag toyhauler for beach, short weekends. It need tires, friend posted last week discounttiredirect on eBay was having a sale $100 off on set of tires over $400. So ordered a set of 4 Carlisle 225/75/15 trail RH, 10ply load e. $314 to my door no tax or shipping.
Trailer I'm putting them on has a 7500 gvw so expect no issues and couldn't pass up price. I will say they seem to be improved where the tread meets the sidewall. Much stiffer than previous carlisle's I've had. Also thicker just above bead area. Time will tell.
Ordered Friday last week at 9am, shipped with tracking # at 3pm. Tires were on door step noon today. Date codes were 51st and 52nd week of 2014.