P275/40R18 Tire Pressure
Discover the load limits at various inflation pressures for P275/40R18 tires to ensure your vehicle's tires are properly inflated for a safe and comfortable drive.
P275/40R18 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 94 with a maximum load capacity of 1477 lbs at 36 psi, capable of supporting up to 1477 pounds when inflated to its maximum air pressure of 36 pounds per square inch.
Standard load (SL) size has a load index of 99 with a maximum load capacity of 1709 lbs at 36 psi, capable of supporting up to 1709 pounds when inflated to its maximum air pressure of 36 pounds per square inch.
P275/40R18 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| P275/40R18 | 94 | LL | 1290 lbs | 1356 lbs | 1422 lbs | 1477 lbs | 1477 lbs (94 LL) | |||
| P275/40R18 | 99 | SL | 1312 lbs | 1433 lbs | 1543 lbs | 1653 lbs | 1709 lbs (99 SL) |
Use the tire pressure calculator to determine proper inflation for new tire size when replacing P275/40R18 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.