Forerunner QH503. FEATURES AND BENEFITS: All season performance; Upgraded controllability; Enhanced load durability; . OVERVIEW: The Forerunner QH503 is a highway terrain, all season tire manufactured for trailers. This tire is NOT MEANT TO BE MOUNTED ON LIGHT TRUCKS, as its construction will not support the weight and performing style of such vehicles. It can ONLY BE MOUNTED ON TRAILERS.The ideal tread pattern and the strong rubber compound work together to closely follow the road surface during the performance. It improves the tire's steering responsiveness and towing stability. The steering response time becomes faster and more precise to the towing vehicle's commands, while the structure is secured against driving pressure. The outer ribs and the rounded shoulders ensure better cornering. These elements upgrade the tire's overall controllability and maneuvering.Great year-round performance is promoted with this tire. The ribbed tread pattern maintains road contact at all times, while the all season compound keeps the rubber flexible in changing temperatures. They enhance the tire's dry, wet, and winter-weather traction. At the same time, the optimal tread grooves effectively eliminate water and slush from the footprint in order to resist hydroplaning. This guarantees the tire's safe all season performance.The Forerunner QH503 offers excellent load and driving durability. The reinforced internal structure and the durable rubber compound maintain the optimal tire shape under load and driving pressure. As the tire does not deform throughout the performance, it can easily carry and withstand heavy loads. This load-carrying capacity and handling power make this tire perfect for heavy-duty applications.This specific tire model features a BIASED ply construction.Manufacturers recommend changing tires every 10 years. As long as tires are properly stored before they are sold, the year of their manufacture will not shorten their service life.