305/30R21 Tire Pressure Chart

Corresponding tire load capacity at specified tire inflation pressures for 305/30R21 tires.

Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi 38 psi 41 psi 42 psi
305/30R21 (100 SL) 1351 lbs 1475 lbs 1596 lbs 1715 lbs 1764 lbs (100 SL)
305/30R21 (104 XL) 1349 lbs 1473 lbs 1594 lbs 1713 lbs 1753 lbs 1830 lbs 1944 lbs 1984 lbs (104 XL)
Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi 38 psi 41 psi 42 psi
305/30R21 100 SL 1351 lbs 1475 lbs 1596 lbs 1715 lbs 1764 lbs (100 SL)
305/30R21 104 XL 1349 lbs 1473 lbs 1594 lbs 1713 lbs 1753 lbs 1830 lbs 1944 lbs 1984 lbs (104 XL)

305/30R21 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.

305/30R21 100 SL is a Standard Load tire with a load index of 100 and a maximum tire load capacity of 1764 lbs @ 36 psi, capable of supporting up to 1764 pounds or 800 kilograms when inflated to its maximum air pressure of 36 pounds per square inch (psi) or 248 kilopascals (kPa).

305/30R21 104 XL is an Extra Load tire with a load index of 104 and a maximum tire load capacity of 1984 lbs @ 42 psi, capable of supporting up to 1984 pounds or 900 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 305/30R21 tire size

8 tire models are available in 305/30R21 tire size. Click on tire model to check its inflation and load capacity values.

Vehicles with 305/30R21 tire size

305/30R21 tire size is used for original equipment tires on 5 vehicles. Click on vehicle model to find its recommended tire pressure for 305/30R21 tires.

Replacement tire sizes compatible with 305/30R21 tire

305/30R21 tire can be replaced with 28 compatible tire sizes. Click on tire size to see its load and inflation table.