Onyx All Steel NTL325. FEATURES AND BENEFITS: All season traction; Enhanced controllability; Longer lasting tread life; . OVERVIEW: The Onyx All Steel NTL325 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 all season traction is ensured with the all season compound and the ribbed tread design. This combination greatly upgrades the dry, wet, and winter traction. The stronger compound utilizes the rubber flexibility in versatile temperatures, significantly optimizing the summer and winter weather performance. The ribbed tread design with the siping and notch pattern enhance the grip on the road surface with extra biting edges, boosting the year round traction. The circumferential grooves prevent hydroplaning by dispersing water and slush from the footprint in wet conditions.The symmetric ribbed tread design allows the tire to improve the controllability. The ideal footprint ensures the surface contact to enhance the steering responsiveness and driving stability. As a result, the towing vehicle has better control over the trailer, boosting the steering response time and accuracy, while the structure is secured against the driving pressure. The full steel belt structure maintains the ideal tire shape under the load pressure affecting the tire. As the tire does not deform under pressure, it is able to greatly upgrade the overall load capacity.The All Steel NTL325 also greatly increases the length of its usability. The stronger structure and the ribbed tread design stabilize the tread elements, preventing tread flexing. Tread flexing generates unnecessary friction between the tire and the road surface, promoting even pressure circulation and avoiding irregular wear formations. The stronger compound utilizes stronger rubber materials, which help to decrease the treadwear rate. The slow and even wear greatly improves the tire's service life. 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.