That is a loaded question, but the axle on most 2720 tm's are of 3000 - 3500 pound rated and the load range C tires are approx 1700 pound per. Which then gets you just a little bit over the REAL weight of a trailmanor. With the D rated tires you get a little protection from the added cargo weight and propane and water etc... I am sure more people with more knowledge can tell you more, If my brother was here he could tell a lot more as he was a tire executive at cupples company in MO. where they actually made the tires. I would and did go up to a D rating tire just for the added protection of added weight. hope that is clear as mud
I think I made a mistake of trailer axle I believe it is a 5000 # rated axle, I was thinking of my small utility trailer