Center flex zone cleans out mud rapidly to ensure navigation through the muddiest trail sections Aggressive shoulder lugs to help propel your ride through rutted and rocky mud terrain Multi-angled lugs provide extra biting edges and a comfortable ride Tough tread rubber compound resists abrasions, chips and cuts 1.5" lugs provide exceptional traction in mud Not certified for use on public roads (NHS). TIRE MT911 30X10-15