Q3's as well. Just did a track day yesterday @ NHMS and found these tires to be fantastic. I used to race LW expert class at NHMS and used Dunlop slicks primarily. Since I only do track days now, I no longer needed the ultimate grip of slicks so I decided to give these a try after reading very positive reviews. After dialing in the pressures to 30-32 psi hot off the track after a couple sessions, I started to gain confidence and get a feel for the difference from the slicks. I worked up to about 95% full race pace for a couple sessions and could not have been happier with these. I was amazed that 'street' tires have gotten this good, and for the $ these can be had for, it is a killer deal! I would also add that novice or amateur racers could actually use these for racing and not approach the limits; cheaper up front and longer lasting than DOT race tires too.