305/30R21 104 XL is an Extra Load tire with tire load index of 104 and maximum tire load capacity of 1984 lbs @ 42 psi.
Calculate proper tire load capacity for 305/30R21 104 XL tire within inflation range of 26 psi to 42 psi. Inflating 305/30R21 104 XL tire over 42 psi will not increase its maximum load carrying capacity of 1984 pounds.
When replacing vehicle's original equipment tires with 305/30R21 104 XL tire, calculate proper replacement tire inflation based on original tire's load capacity at its recommended tire pressure. Never overload 305/30R21 104 XL tire above its maximum load capacity of 1984 lbs.
Original Tire is LT-Metric
All listed data is for informational purposes only. TirePsi.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. For individual tire size, refer to its load and inflation table.
Tires with 305/30R21 tire size
8 tire models are available in 305/30R21 tire size. Click on tire model to check its maximum tire inflation and tire load capacity.