This 2-pack provides a complete and ready-to-install wheel solution for a variety of light to medium-duty trailers. Each assembly is delivered as a pre-mounted unit, featuring an ST175/80D13 radial tire securely fitted onto a 13-inch diameter by 4.5-inch wide steel wheel. The wheel is configured with a 5-lug bolt pattern on a 4.5-inch pitch circle diameter and features a 3.19-inch center bore. To ensure a proper fit, it is important to verify that these specifications match your trailer's hub requirements prior to installation.The ST175/80D13 tire is designed for dependable performance and consistent load support. Rated as Load Range C with a 6-ply construction, each tire offers a load capacity of 1,360 pounds. The tire's robust internal structure includes a full nylon cap ply, which enhances its overall durability and provides improved resistance to punctures and other road hazards.Featuring a deeper tread pattern, these tires are engineered to deliver reliable traction on various surfaces. The tread design also promotes even contact with the ground, helping to distribute the trailer's load uniformly across the tire's surface. This contributes to stable towing characteristics and helps extend the tire's service life by reducing irregular wear patterns.These tire and wheel assemblies are well-suited for a broad range of applications. They are an excellent choice for small boat trailers, utility trailers, cargo trailers, and light-duty campers, as well as for commercial uses such as warehouse carts and industrial equipment.