P255/40R18 Tire Pressure
Discover the load limits at various inflation pressures for P255/40R18 tires to ensure your vehicle's tires are properly inflated for a safe and comfortable drive.
P255/40R18 is a P-Metric tire that comes in a Light Load (LL) range and a Standard Load (SL) range.
Light load (LL) size has a load index of 90 with a maximum load capacity of 1323 lbs at 36 psi, capable of supporting up to 1323 pounds when inflated to its maximum air pressure of 36 pounds per square inch.
Standard load (SL) size has a load index of 95 with a maximum load capacity of 1521 lbs at 36 psi, capable of supporting up to 1521 pounds when inflated to its maximum air pressure of 36 pounds per square inch.
P255/40R18 Tire Pressure Chart
| Tire Size | Load Index | Load Range | 26 psi | 29 psi | 32 psi | 35 psi | 36 psi | 38 psi | 41 psi | 42 psi |
|---|---|---|---|---|---|---|---|---|---|---|
| P255/40R18 | 90 | LL | 1135 lbs | 1201 lbs | 1257 lbs | 1323 lbs | 1521 lbs (90 LL) | |||
| P255/40R18 | 95 | SL | 1168 lbs | 1268 lbs | 1378 lbs | 1477 lbs | 1521 lbs (95 SL) |
Use the tire pressure calculator to determine proper inflation for new tire size when replacing P255/40R18 tires.
All listed guides, 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.