What is the difference between ST175 80D13 and ST175 80R13?
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. St stands for special trailer indicating the tire’s trailer only use. These trailer tires are manufactured for various special trailer applications, optimizing their durability, controllability, and performance.Here’s what it means: ST – Special Trailer tire. Width of the tire in millimeters. Aspect ratio (height of the sidewall as a percentage of width) R – Radial construction.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.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.
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. Load Range C: 6-ply rating, a common choice for medium-sized trailers. Load Range D: 8-ply rating, suitable for larger trailers or heavier loads. Load Range E: 10-ply rating, often used for heavy-duty trailers or commercial applications.Protect your trailer If you frequently haul heavy cargo, opting for D tires is advisable due to their robust construction and ability to handle greater weight without compromising safety. Conversely, for lighter loads or recreational use, R tires may be sufficient, offering a smoother ride and better fuel efficiency.For a tire with a 14” diameter, you don’t want to have a load capacity much heavier than 2,000 pounds per tire. D range tires are a bit more heavy duty than C range tires and are more suitable for larger open trailers or enclosed cargo trailers.The overall height of the ST175/80/13 tire is 24 inches and the overall width is approximately 7 inches. A comparable tire would be the Karrier ST175/80R13 Radial Trailer Tire – Load Range C # AM10199, which is 24.
What is the rating of st175 80d13?
This tire is a 175/80-13 rated for 1,360 pounds at 50 psi and it has an M speed rating which is 81 miles per hour. First, 4. Second, 4. Load Range B – 785# at 60 psi, and LR C – 990# at 90 psi.
What is the speed rating for 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.