245/45R21 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).
Tire Load Capacity Calculator
Calculate proper tire load capacity for 245/45R21 104 XL tire within inflation range of 26 psi to 42 psi. Inflating 245/45R21 104 XL tire over 42 psi will not increase its maximum tire load carrying capacity of 1984 pounds.
Replacement Tire Pressure Calculator
When replacing vehicle's original equipment tires with 245/45R21 104 XL tire, calculate proper replacement tire inflation based on original tire's load capacity at its recommended tire pressure. Never overload 245/45R21 104 XL tire above its maximum tire load capacity of 1984 pounds.
Original Tire is LT-Metric
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 245/45R21 tire size
4 tire models are available in 245/45R21 tire size. Click on tire model to check its inflation and load capacity values.