225/40R18 Tire Pressure Chart

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

225/40R18 is a Metric tire size that comes with 2 tire load index and load range options.

Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi (SL) 38 psi (XL) 41 psi 42 psi
225/40R18
SL 88
948 lbs 1036 lbs 1113 lbs 1190 lbs 1235 lbs Show Specs
225/40R18
XL 92
948 lbs 1036 lbs 1113 lbs 1190 lbs 1235 lbs 1268 lbs 1356 lbs 1389 lbs Show Specs

225/40R18 88 SL is a Standard Load tire with tire load index of 88 and maximum tire load capacity of 1235 lbs @ 36 psi.

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 load carrying capacity of 1235 pounds.

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 load capacity of 1235 lbs.

Original Tire
is LT-Metric

225/40R18 92 XL is an Extra Load tire with tire load index of 92 and maximum tire load capacity of 1389 lbs @ 42 psi.

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 load carrying capacity of 1389 pounds.

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 load capacity of 1389 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 225/40R18 tire size

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

Vehicles with 225/40R18 tire size

225/40R18 tire size is used for original equipment tires on 73 vehicles. Click on vehicle model to find its recommended tire pressure for 225/40R18 tires.