The Good: Great overall tread, Light weight, looks great
The Bad: only one size.
I have these tires on two bikes, front and rear on my park/street bike and as a front tire on my race bike. Many reviews on how they handle park/street so I will write about as a race tire.
The 2.25 makes it perfect as a front race tire providing great traction on all dirt tracks and also ones with paved berms. The tires handle the transition between pavement and dirt on the track wonderfully. the high pressure and light weight make it ideal for racing. The tread has held up (racing almost every weekend this season and sprint training 3-4 times a week) with no signs of balding, and handles the super sandy and muddy condition very well. I would say better than most "racing tires". Only down side it , lack of sizes. If it came in a 1.75 or even a 1.95 I would run it.