The Couragia M/T tire is Federal's premier off-road tire with a rugged tread and stong construction necessary to conquer even the toughest terrain and loads. It features large shoulder lugs and Federal Tire's most recent technological development in tread design called SRG. SRG stands for Sloped Radius Gradient, and is a new way of aligning and angling the tread blocks for improved tread-life and traction. The Federal Couragia M/T tire is also super durable thanks to advanced tread compounds and extra belts that resist cuts and flats for a long, service-free tread-life. This is a great value for off-road enthusiasts or Jeep / truck owners looking for an aggressive looking tread that wont be too noisy or uncomfortable on the highway.