Power King Navitrac N555  Tires. 
Power King Navitrac N555 is a drive position radial tire made for commercial trucks and buses, designed for long-haul applications.
Tire features:
Closed shoulder ribs help in long hauls by maintaining even pressure distribution and resistance to irregular wear, lowering rolling resistance, and saving more fuel.
Stone ejectors in center grooves maintain casing integrity by reducing stone drilling.
Large tread blocks with siping increase the traction and grip in wet and wintry weather conditions.
Steel-belted internal construction designed for toughness and tire rigidity, reduced chance of deformation under heavy loads, providing stability and even wear.