225/40R18 Tire Pressure Chart

Corresponding tire load capacity at specified tire inflation pressures for 225/40R18 tires.

Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi 38 psi 41 psi 42 psi
225/40R18 (88 SL) 946 lbs 1034 lbs 1118 lbs 1202 lbs 1235 lbs (88 SL)
225/40R18 (92 XL) 946 lbs 1032 lbs 1116 lbs 1199 lbs 1226 lbs 1281 lbs 1360 lbs 1389 lbs (92 XL)
Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi 38 psi 41 psi 42 psi
225/40R18 88 SL 946 lbs 1034 lbs 1118 lbs 1202 lbs 1235 lbs (88 SL)
225/40R18 92 XL 946 lbs 1032 lbs 1116 lbs 1199 lbs 1226 lbs 1281 lbs 1360 lbs 1389 lbs (92 XL)

225/40R18 is an Metric tire.

225/40R18 88 SL is a Standard Load tire with a load index of 88 and a maximum tire load capacity of 1235 lbs @ 36 psi, capable of supporting up to 1235 pounds or 560 kilograms when inflated to its maximum air pressure of 36 pounds per square inch (psi) or 248 kilopascals (kPa).

Tire Load Capacity Calculator

Calculate proper tire load capacity for 225/40R18 88 SL tire within inflation range of 26 psi to 36 psi. Inflating 225/40R18 88 SL tire over 36 psi will not increase its maximum tire load carrying capacity of 1235 pounds.

Replacement Tire Pressure Calculator

When replacing vehicle's original equipment tires with 225/40R18 88 SL tire, calculate proper replacement tire inflation based on original tire's load capacity at its recommended tire pressure. Never overload 225/40R18 88 SL tire above its maximum tire load capacity of 1235 pounds.

Original Tire
is LT-Metric

225/40R18 92 XL is an Extra Load tire with a load index of 92 and a maximum tire load capacity of 1389 lbs @ 42 psi, capable of supporting up to 1389 pounds or 630 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 225/40R18 92 XL tire within inflation range of 26 psi to 42 psi. Inflating 225/40R18 92 XL tire over 42 psi will not increase its maximum tire load carrying capacity of 1389 pounds.

Replacement Tire Pressure Calculator

When replacing vehicle's original equipment tires with 225/40R18 92 XL tire, calculate proper replacement tire inflation based on original tire's load capacity at its recommended tire pressure. Never overload 225/40R18 92 XL tire above its maximum tire load capacity of 1389 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.

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Tires with 225/40R18 tire size

146 tire models are available in 225/40R18 tire size. Click on tire model to check its inflation and load capacity values.

Vehicles with 225/40R18 tire size

225/40R18 tire size is used for original equipment tires on 75 vehicles. Click on vehicle model to find its recommended tire pressure for 225/40R18 tires.

Replacement tire sizes compatible with 225/40R18 tire

225/40R18 tire can be replaced with 49 compatible tire sizes. Click on tire size to see its load and inflation table.