With all the rocky terrain at Moab, you might be asking yourself why even test mud tires here. The answer is simple. While the meatier tread of a mud tire lets the tire dig through deep mud, it also acts like the fingers of a rock climber scratching and clawing for every bit of traction as the vehicle is driven over rocks. One of the most extreme trails we experienced featured a 40-degree decline, and like every other trail, the Mud Kicker tires made easy work of the rocky terrain.