XT400W Front/Rear Mud Radial Tires SYSTEM 3 The XT400W sets a new standard in MUD tire performance! The “W” features a full 12” tread width allowing driver to ride “over” the ruts, not in them. Deeper 1.5”- 2.” deep 2-stage lugs, wider tread spacing combined with aggressive shoulder tread overhang delivers pure mud performance 10-ply rated radial carcass offer the perfect blend of flex, flotation and durability