285/40R21 Tire Pressure Chart

Corresponding tire load capacity at specified tire inflation pressures for 285/40R21 tires.

Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi 38 psi 41 psi 42 psi
285/40R21 (105 SL) 1563 lbs 1706 lbs 1845 lbs 1982 lbs 2039 lbs (105 SL)
285/40R21 (109 XL) 1545 lbs 1687 lbs 1825 lbs 1960 lbs 2006 lbs 2094 lbs 2224 lbs 2271 lbs (109 XL)
Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi 38 psi 41 psi 42 psi
285/40R21 105 SL 1563 lbs 1706 lbs 1845 lbs 1982 lbs 2039 lbs (105 SL)
285/40R21 109 XL 1545 lbs 1687 lbs 1825 lbs 1960 lbs 2006 lbs 2094 lbs 2224 lbs 2271 lbs (109 XL)

285/40R21 is an Metric tire.

Use our tire pressure calculator to calculate proper tire inflation for replacement tires to match the original equipment tire load capacity on your vehicle.

285/40R21 105 SL is a Standard Load tire with a load index of 105 and a maximum tire load capacity of 2039 lbs @ 36 psi, capable of supporting up to 2039 pounds or 925 kilograms when inflated to its maximum air pressure of 36 pounds per square inch (psi) or 248 kilopascals (kPa).

285/40R21 109 XL is an Extra Load tire with a load index of 109 and a maximum tire load capacity of 2271 lbs @ 42 psi, capable of supporting up to 2271 pounds or 1030 kilograms when inflated to its maximum air pressure of 42 pounds per square inch (psi) or 290 kilopascals (kPa).

All listed 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. Always refer to vehicle owner's manual for recommended tire pressure settings. Never overinflate or overload a tire beyond its maximum capabilities listed on sidewall.

Tires with 285/40R21 tire size

14 tire models are available in 285/40R21 tire size. Click on tire model to check its inflation and load capacity values.

Vehicles with 285/40R21 tire size

285/40R21 tire size is used for original equipment tires on 3 vehicles. Click on vehicle model to find its recommended tire pressure for 285/40R21 tires.

Replacement tire sizes compatible with 285/40R21 tire

285/40R21 tire can be replaced with 27 compatible tire sizes. Click on tire size to see its load and inflation table.