I own 6 sportbikes and have been running the Q2's since they came out. They were the best performance tires I had ever ridden on, until the Q3's came out! These tires are the absolute best that money can buy for aggressive street riding. If you really "ride" your bike, these are the tires you want. I cannot yet attest to their tread life, but I can say that I would run them even if they only lasted for 2000 miles, they are that good!