255/40R18 Tire Pressure Chart

Corresponding tire load capacity at specified tire inflation pressures for 255/40R18 tires.

Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi 38 psi 41 psi 42 psi
255/40R18 (95 SL) 1166 lbs 1272 lbs 1376 lbs 1479 lbs 1521 lbs (95 SL)
255/40R18 (99 XL) 1164 lbs 1270 lbs 1373 lbs 1475 lbs 1508 lbs 1576 lbs 1676 lbs 1709 lbs (99 XL)
Tire Size 26 psi 29 psi 32 psi 35 psi 36 psi 38 psi 41 psi 42 psi
255/40R18 95 SL 1166 lbs 1272 lbs 1376 lbs 1479 lbs 1521 lbs (95 SL)
255/40R18 99 XL 1164 lbs 1270 lbs 1373 lbs 1475 lbs 1508 lbs 1576 lbs 1676 lbs 1709 lbs (99 XL)

255/40R18 is an Metric tire.

255/40R18 95 SL is a Standard Load tire with a load index of 95 and a maximum tire load capacity of 1521 lbs @ 36 psi, capable of supporting up to 1521 pounds or 690 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 255/40R18 95 SL tire within inflation range of 26 psi to 36 psi. Inflating 255/40R18 95 SL tire over 36 psi will not increase its maximum tire load carrying capacity of 1521 pounds.

Replacement Tire Pressure Calculator

When replacing vehicle's original equipment tires with 255/40R18 95 SL tire, calculate proper replacement tire inflation based on original tire's load capacity at its recommended tire pressure. Never overload 255/40R18 95 SL tire above its maximum tire load capacity of 1521 pounds.

Original Tire
is LT-Metric

255/40R18 99 XL is an Extra Load tire with a load index of 99 and a maximum tire load capacity of 1709 lbs @ 42 psi, capable of supporting up to 1709 pounds or 775 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 255/40R18 99 XL tire within inflation range of 26 psi to 42 psi. Inflating 255/40R18 99 XL tire over 42 psi will not increase its maximum tire load carrying capacity of 1709 pounds.

Replacement Tire Pressure Calculator

When replacing vehicle's original equipment tires with 255/40R18 99 XL tire, calculate proper replacement tire inflation based on original tire's load capacity at its recommended tire pressure. Never overload 255/40R18 99 XL tire above its maximum tire load capacity of 1709 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 255/40R18 tire size

79 tire models are available in 255/40R18 tire size. Click on tire model to check its inflation and load capacity values.

Vehicles with 255/40R18 tire size

255/40R18 tire size is used for original equipment tires on 51 vehicles. Click on vehicle model to find its recommended tire pressure for 255/40R18 tires.

Replacement tire sizes compatible with 255/40R18 tire

255/40R18 tire can be replaced with 87 compatible tire sizes. Click on tire size to see its load and inflation table.