The X-Terrain has been around for some time now. It has been tested in every element, from rocks to sand to highway to snow. And many people have had success with it. Look around you. A lot of people are running them nowadays, even on their daily drivers. Why? Because they work well everywhere, including the street. But now, at the small price of advanced tread wear, Pro Comp has taken off-road traction one step further with its competition-derived 37-inch X-Terrain featuring the XTC compound. The 37-inch tire features a softer compound and different carcass construction, making it a more abuser-friendly off-road tire.