ST185/80R13 Tire Pressure
Discover the load limits at various inflation pressures for ST185/80R13 tires to ensure your vehicle's tires are properly inflated for a safe and comfortable drive.
ST185/80R13 is a Special Trailer tire that comes in 3 load ranges. ST185/80R13 tires can be used in dual rear wheel application.
ST185/80R13 tire with load range B and load index of 87 has a maximum single tire load capacity of 1200 lbs at 35 psi, capable of supporting up to 1200 pounds or 544 kilograms, while dual tire application with load index of 82 has a maximum dual tire load capacity of 1050 lbs at 35 psi, capable of supporting up to 1050 pounds or 476 kilograms when inflated to its maximum air pressure of 35 pounds per square inch (psi) or 241 kilopascals (kPa).
ST185/80R13 tire with load range C and load index of 94 has a maximum single tire load capacity of 1480 lbs at 50 psi, capable of supporting up to 1480 pounds or 671 kilograms, while dual tire application with load index of 89 has a maximum dual tire load capacity of 1280 lbs at 50 psi, capable of supporting up to 1280 pounds or 581 kilograms when inflated to its maximum air pressure of 50 pounds per square inch (psi) or 345 kilopascals (kPa).
ST185/80R13 tire with load range D and load index of 99 has a maximum single tire load capacity of 1710 lbs at 65 psi, capable of supporting up to 1710 pounds or 776 kilograms, while dual tire application with load index of 95 has a maximum dual tire load capacity of 1520 lbs at 65 psi, capable of supporting up to 1520 pounds or 689 kilograms when inflated to its maximum air pressure of 65 pounds per square inch (psi) or 448 kilopascals (kPa).
ST185/80R13 Tire Pressure Chart
| Tire Size | 25 psi | 30 psi | 35 psi | 40 psi | 45 psi | 50 psi | 55 psi | 60 psi | 65 psi | 70 psi | 75 psi | 80 psi | 95 psi | 110 psi |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max Load Single | 990 lbs | 1100 lbs | 1200 lbs (B) 87 | 1300 lbs | 1400 lbs | 1480 lbs (C) 94 | 1580 lbs | 1650 lbs | 1710 lbs (D) 99 | |||||
| Max Load Dual | 870 lbs | 970 lbs | 1050 lbs (B) 82 | 1150 lbs | 1230 lbs | 1280 lbs (C) 89 | 1390 lbs | 1460 lbs | 1520 lbs (D) 95 |
Use the tire pressure calculator to determine proper inflation for new tire size when replacing ST185/80R13 tires.
All listed guides, data and/or calculations are for informational purposes only. TirePressure.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information.