As a rugged terrain tire, the Nitto Ridge Grappler is designed to offer the best of mud-terrain and all-terrain design and performance. The Ridge Grappler features an aggressive blocky tread with wide void ratio for good self-cleaning of mud and debris, with a combination of shoulder and zigzag grooves for dependable traction off-road. The tread pitch of the Ridge Grappler is randomized and computer tuned to cancel certain frequencies and keep road noise to a minimum. Stone ejectors protect the casing against damage from rocks and debris, reinforced block foundations add rigidity to the tread, and stepped block edges multiply traction on wet or snowy pavement. Like all Grappler tires, the Ridge Grappler features a plain sidewall on one side and "lizard skin" texture on the other, making it easy to customize your truck's aesthetics.