You wont be pulling that size trailer for long in the xterra. I dont recommend it if you plan on going into the mountains. I pulled my sisters small car home one day and to say the least its not meant for towing trailers. Not on a regular basis. The V6 just is up to the duty, if it was a tent trailer then you might be able to get by. Dont forget to add all the weight of the equipment you will be hauling to the weight of the trailer.