The Cooper STT Pro features an aggressive 85% off-road tread pattern to keep you moving in the mud, sand, rocks and loose soil during your off-road adventures. The alternating 3-2 pattern of the inner tread ribs provides a number of significant benefits for the STT Pro like: reduced road noise, increased stability and handling, superior soft surface (trail) and mud traction, balanced wear and reduced tendency for vehicle drift. The Cooper STT Pro also features a heavy duty carcass, with two radial body plies and one angled body ply to deliver extra protection against impact breaks and bruising.