It's time for some new tires and I just recently purchased my first travel trailer. Here's the info, truck is a 2010 Supercrew F150. Trailer is a 2017 Keystone dry weight 6700 pounds. I already plan on upgrading trucks in the next year maybe two. Point is I need tires badly now. Tire size is a 275/55/R20 factory but I'm running 275/60/R20 115T. I wanted to at least go with a eight ply or even a 10 ply. I'm stuck because I cant find anything with that type of load rating in the factory size. In the 275/60/R20 I'm only finding a 8 ply BFG KO2 all terrain or for a little cheaper in 10 ply a Nitto Dura Grappler highway terrain. I don't need the all terrain tire and most my miles are on the highway anyways. If anyone has some advice or options please let me know. Guess I kinda am leaning towards the Nittos (Only option really in that size) but if I could find something in the factory size I'd save some money. Load ratings seem to drop with the factory size as well as price.