I pulled our Forest River R-Pod, about 2100lbs, from Alabama to the Grand Canyon,over to Cortez, New Mexico last summer with my 2011 JKUR. I was well within the tow rating (3500 lbs) but the motor just didn't have the power. 9 to 10 mpg also. I wouldn't try this again unless I had the 2012 with more powerful engine. Have the auto trans and it was always downshifting. Just to much wind drag towing a RV. Even with the 2012 I wouldn't try a cross countrytrip again.
Black '05 LJ Rubicon; 4" higher, 35" MT/R's, Shrockworks bumper & sliders, Big Daddy Offroad rear bumper/ tire carrier, Or-Fab cage, RC disconnects and a winch