Load Range C Trailer Tire Weight Capacity

The wheel tire you referenced kenda 4 80 12 bias trailer tire wheel am30660 combines a steel wheel rated for 1250 lbs with a load range c tire that itself is rated for 990 lbs at 90 psi.

Load range c trailer tire weight capacity.

Since the tire is rated lower than the wheel the lower rating determines the overall capacity of this item 990 lbs. The reason the capacity for two tires is lower than a single tire is to make sure that the vehicle can continue to carry the load should one tire fail. If a tire has load range c it can carry 1 820 pounds. Using this same example when it comes to load range you may see these indicated as c1 or c2.

Light truck tires have two load indexes on the sidewall of the tire unlike passenger tires which only have one. Lt metric lt flotation and lt numeric tires are branded with their load range load range e or lre or their ply rating 10 ply rated on their sidewalls and list their appropriate load range letter in their descriptions as lt245 75r 16 e 7 50r 15 d or 31x10 50r 15 c. The tire load index lets you know the load carrying capacity of a tire. Trailer tire speed ratings load capacity 65mph.

Lt sized tires featuring section widths of 305mm 12 50 or wider have their. For example a light truck tire with a load index of 120 116 means a load capacity for a single tire of 3 086 pounds and a load capacity of 2 756 pounds for two tires. This 65mph test allows the tire to qualify as a high speed tire. For example a c load range indicates that a tire is equivalent to a 6 ply construction tire.

Every st trailer tire you see on the highway goes through this exact same test regardless of tire size or manufacturer. In other words it s the amount of weight your tire can support safely. Most boat trailer tires have a load range of b c or d. For example if a tire has a load index of 92 it can support 1 389 pounds at maximum air pressure.

Using the tire load index chart. This tire isn t actually built with 6 plies but rather one or two plies of equivalent strength. A load range c tire for example is at its peak load capacity possibly 1600 pounds when it s inflated to its maximum pressure of 50 psi. Multiply that by four tires 4 x 1 389 5 556 pounds to get your.

If it s on a single axle trailer this means both tires can carry a total of 3 640 pounds which includes the weight of the trailer the boat the engine fuel and anything else inside the boat. Using the load range chart the 117 112 load index equates a load capacity for a single tire of 2 833 pounds and a load capacity of 2 469 pounds for two tires. This is because light truck tires are often used on vehicles with dual rear wheels. Unlike automotive tires all st tires are tested and rated at by the dot at 65mph.

See a tire professional who would be more than happy to help. Trailer tires typically have c d or e load ranges.