What is the difference between ST175 80R13 and d13?
The difference between the letter D in your ST175/80D13 and the R in the tire size of the Wheel and Tire ST175/80R13 part # AM31985 that you referenced is the tire construction. D stands for bias-ply which is a less preferred tire construction, whereas R stands for radial. The D in 75D15 stands for diagonal or bias ply, indicating that the tire’s internal fabric layers are diagonally arranged, while the R in 75R15 stands for radial, meaning that the tire’s internal fabric layers are arranged radially from the center.The D means that you have a tire with a diagonal ply construction. R is a better tire construction, because it means radial. The 13 is the important number because that is the diameter in inches of your wheel.The difference between the letter D in your ST175/80D13 and the R in the tire size of the Wheel and Tire ST175/80R13 part # AM31985 that you referenced is the tire construction. D stands for bias-ply which is a less preferred tire construction, whereas R stands for radial.
What does ST175 80R13 mean?
Tires beginning with a ST (for example ST175/80R13) indicate a Special Trailer tire and should only be used on car, boat or utility trailers. LOAD INDEX AND SPEED RATING. Example: P225/60/R16 94V. The load index and speed rating, or service description, are the numbers that follow the tire size. Trailer tires must be ST tires, which stands for Special Trailer. ST tires are purpose-built to handle the unique stresses of towing — something LT (Light Truck) and P (Passenger) tires simply aren’t designed to do.Special Trailer (ST) Trailer tires are developed specifically for use on travel trailers, pop-up campers, boat trailers and fifth wheel trailers. Designed to deliver on-highway service for towed trailers, ST-sized tires are not intended to be used on cars or light trucks.Higher Load Capacity For the same size, ST tires can carry 10% more load than equivalent LT tires and 40% more than passenger car (P) tires. That extra capacity is crucial when your tires are supporting the full weight of the boat, trailer, and gear over long distances.Special Trailer (ST) Trailer tires are developed specifically for use on travel trailers, pop-up campers, boat trailers and fifth wheel trailers. Designed to deliver on-highway service for towed trailers, ST-sized tires are not intended to be used on cars or light trucks.ST235/85R16 16-Ply Trailer Tire – All Steel, Load Range H | 4,540 lb Capacity | 120 PSI.
What is the load rating of the ST175 80D13?
Ideal for trailers needing a durable, 1360 lb. Ideal for trailers needing reliable tires, with 1760 lbs. Load range C and D on trailer tires refer to the tire’s load-carrying capacity and inflation limits. Load range C can carry a maximum load of 1,820-2,270 lbs at 50-60 psi, while load range D can carry a maximum load of 2,540-3,000 lbs at 65-80 psi.Load range C and D refer to the weight capacity and air pressure level of tires, with D having a higher capacity than C.Load range D on a trailer tire refers to the tire’s capacity to carry a specific weight. It is a measure of the tire’s strength, with load range D indicating that the tire can carry a relatively high load, typically up to 2540 lbs at maximum air pressure.For your basic family camping or general trailer hauling needs, however, this load range is likely too heavy duty for your trailer. C and D load range tires are the most used when it comes to medium to larger-size trailers, but if you’re hauling a heavy-duty trailer, load range E tires are probably what you need.D Load Range Tires This load range can hold between 2,000 and 2,500 pounds of trailer weight per tire with the tires’ pressure being 65 psi. For a tire with a 14” diameter, you don’t want to have a load capacity much heavier than 2,000 pounds per tire.
What is the speed rating of the hi run st175 80d13?
Interstate Speed: Engineered with a Speed Rating L (75 mph) for sustained interstate speeds when towing boats or cargo. They are also typically speed rated to 65 mph max so highway speeds are perfectly doable.