I just installed a set of the Defender LTX M/S in a Load range E. I was going on a little faith from internet reading.
We've had them on one week and I've done a 30 mile tow with our 7k pound trailer. First, I am surprised, but it seems my highway mileage has increased about 1mpg. It is a heavier tire, but maybe less rolling resistance? Second, the stability and tracking with the trailer is immediately noticeable. I may have lost .5mpg towing, but so hard to tell still.
IMO, these tires look terrible. I put that aside to go with what many say are the market leaders. So far, I'm impressed.
Oh...Discount Tire put 38 pounds in them and the ride was hardly different. I put 52 pounds in them for this short camping trip, and they did ride firmer...but nothing harsh.
2013 F150, EBoost,4x4,CC, MaxTow
2015 Surveyor 245BHS