the pure nature of the gtr engine shows its not designed for towing
small capacity and high revving nature
sure it will tow fine because it does have decent torque and power but only once it starts climbing in revs
but for something to be GOOD for towing not just be able to tow (any car can tow) you want decent torque from idle to 3k (to get the weight moving, thats the hardest part for the car) after that any car will do ok with towing (once moving its easier to keep moving)
the gtr will tow fine cause it does make decent power and torque because its on overall good motor
other than that the reason i say no is pure personal dislike of towbars on performance cars
i dont know any of the dynamics or engineering and dont claim to
RellikZephyr