Maxxis M966 Mudzilla tires are high performance tires with a Ply rating of 6 for improved puncture resistance. M966 Mudzilla tires are available in 25-inch, 26-inch, 27-inch, 28-inch and 30-inch sizes for greater ground clearance. Cheng Shin M966 Mudzilla tires feature gigantic pyramid-shaped tread bars that allow for optimal traction in the mud with a step-down pattern for maximum durability. They are made of high quality rubber material.