I have a 2011 Pro4X that tows a Chalet Arrowhead that is considerably lighter than your trailer (dry weight 1435#, GVWR 3000#), and I think you will find that your trailer is too heavy for your Xterra. We just completed a trip that included your area (northern Nevada), and like my state of Washington, you have considerable variations in elevation that will test the limits of any tow vehicle. You will need a weight distributing hitch (WDH) for sure, and unless Nissan improved their notoriously wimpy rear leaf springs by 2015, you may also need to add air springs to help keep your rig level.