Trailer King Ultra STR is an all-steel ST radial tire designed for highway driving of trailers with high load capacities. This trailer tire engineered to deliver long life, great traction, and even wear. Its four wide circumferential grooves serve to evacuate water away from the ...Trailer King Ultra STR is an all-steel ST radial tire designed for highway driving of trailers with high load capacities.
This trailer tire engineered to deliver long life, great traction, and even wear. Its four wide circumferential grooves serve to evacuate water away from the tires footprint, which ultimately reduces the risk of hydroplaning. The cross rib sipes also enhance the tires traction in both wet and dry conditions.
As the trailers cover long distances at once, its important that tire stays cool, which is why the circumferential grooves are deep enough to disperse the heat and keep the tire cool for longer periods of time. Ultra STRs all-steel construction helps the tire to maintain its shape under heavy loads and extended driving. The stone ejectors embedded in the tread help to minimize the stone retention and protect the casing in the base of the tread groove.