Well i was out testing my comp claws for the first time yesterday for about five hours. We were on smooth but grippy rock. Almost every tire that we use in this spot works good, We had the panthers, jconcepts and losi comp claws running. For the first half of the day i was un impressed, but thing is they need quite abit of break in time, just like most tires i have used. I have always used the losi regualr claws and only those so i am comparing the comp claws to the old claws. After a few hours on the rocks it was time for some side hilling, they exceded my expectations,they out performed the regular claws by far. like i said after a few hours of break in time the traction increased, making lines that i could not earlier. I got home and scrubbed them clean with some dish soap and a stiff scrub brush and now they feel right, So anyways i am happy with my comp claws. I just think it takes alittle while to break them in..