Quad Boss Qbt673 Mud Tires Features Qbt673 is the most aggressive Mud Tire in the QuadBoss line of tires If mudding is for you, then the Qbt673 tire is also for you This tire has a built-in rim guard to protect wheels from dents and dings Directional tread for optimal traction. Load capacity:1200 lbs. Sizes from 30 -34 Up to 2 of tread depth