Para Bellum, I had a front Commander II with about 8000 miles on it start to vibrate at 75 mph feeling like its out of balance. still had about half tread left and no noticeable defects. Tire was ordered in by dealer from Drag Specialties. Was not a terrible vibration, just enough to be annoying vibrating bars and mirrors at interstate speed. Went back to dealer twice to try and figure out if it was balance, tires, bearings, etc. Was not getting much satisfaction from dealer giving me a story about pressure, road conditions or other causes. After MTM I got back home and just replaced it instead of dealing with warranty or the dealer. Consider this another strike on the dealers service department for not trying to help. Three strikes and they may lose a future bike sale.