The only drawbacks that I can say off hand are the pressures needed to seat the tire. It changes the handling charateristics somewhat, but its been 2 days and I've put over 300 miles on it and I'm used to it. You just have to find the "sweet spot" that works best for you. I cant really think of any draw backs to it other than the pressure and I'm getting used to it...... The Nexen has been wonderful so far but then again I'm only 300 miles into it. At 74.00 I had to try.