I tow a 25 foot 5000, pound (empty) Pioneer with my 2014 Ram with the V-8. Full it is probably 6500 pounds
It tows it much better then my old Ford F-150.
It will tow at any speed you want to go, and many times I forget the trailer is behind me.
I live in the steep NC mountains and it pulls up them at any speed I want to go. I can go up them at 50 miles per hour where as my old F-150 would be held to 35.
My only complaint is downshifting coming down steep mountains it will not hold back without going into high RPMs.(that is both in tow haul and out of tow haul)
My gas mileage average at 65 is between 12 and 13 MPG. If I am at 70 or 75 it drops to 10. That is with the bed fully loaded and tw0 long sea kayaks and a canoe on the roof.( I have a cap on the bed)
So far we are on our second 2000 mile trip with it
If I had to get another truck today I would get the same
Jack L