I've ran Ground Hawg's on a few truck. I've checked into other brands, but alway buy the Hawg's. I've ran them year round and I like them. I'm not into rocks so I can't give you first hand experence for that, but I have seen a few rigs on the rocks with them and they didn't have anymore problem then most of the other rigs on other tires. I mostly play in the mud, and run trails up in the forest. The biggest + for me is that Ground Hawg's will out last 90% of any other tire on the market. I use Ground Hawg's and I like them alot. No complaints what so ever about Ground Hawg's. Great tire, been around for a long time, because it works well !!!!!!!!!! To bad Tim-may can't understand that. /forums/images/graemlins/whistling.gif