I was sort of skeptical at first when I bought these tires, but boy was I wrong. Surprisingly enough, the 2 ply rating is extremely durable, however I still would not ride on the road; I like these tires too much! In addition, they grip extremely well, almost too well when track conditions are optimal; cornering is very precise. I might need to get a steering stabilizer because of some bump-steer I'm getting now! Will definitely buy again!