Grand Highlander tire sizes and pressures

From the "Tires and wheels" specifications in Toyota's Grand Highlander Owner's Manuals OM0E111U (gas, T24A-FTS engine; page 526) and OM0E112U (hybrid; pages 577-578), read November 10, 2026. Both manuals list the same figures, and wheel nut torque of 103 ft-lbf (140 N-m) for both setups. The manuals' QR code links identify them as 2025 model year manuals; toyota.com's 2027 Grand Highlander features, read November 10, 2026, list the same 255/65R18 and 255/55R20 tire sizes.

Use the size and pressure on your Grand Highlander's label

The manuals say the recommended cold tire inflation pressure and tire size are displayed on the tire and loading information label. If your tires are a different size from those listed, or you are not sure which type applies to your vehicle, we suggest going by that label.

Both tire sizes are listed at 35 psi (240 kPa) cold, with no difference between front and rear, and the compact spare at 60 psi (420 kPa); do not forget to check it.

For the 20-inch Type B setup, the manuals add that for driving at high speeds (above 100 mph, in countries where such speeds are permitted by law) you should add 1 psi (10 kPa) to the front and rear tires, and never exceed the maximum cold tire inflation pressure on the tire sidewall.

How to check Grand Highlander tire pressure

The owner's manuals say to check tire inflation pressure every two weeks, or at least once a month, and not to forget the spare. Check only when the tires are cold: if the vehicle has been parked for at least 3 hours or has not been driven for more than 1 mile (1.5 km), you will get an accurate cold reading.

Always use a tire pressure gauge; the manuals note it is difficult to judge inflation based only on appearance. Remove the valve cap, press the gauge onto the valve and read it. If the pressure is not at the recommended level, adjust it; if you add too much air, press the center of the valve to deflate. When you are done, apply soapy water to the valve to check for leakage, then put the valve cap back on.

Pressure is normally higher after driving because heat is generated in the tire. The manuals say not to reduce tire pressure after driving, and never to exceed the vehicle capacity weight.

The manuals list the effects of incorrect tire pressure as reduced fuel economy, reduced driving comfort and poor handling, reduced tire life due to wear, reduced safety and damage to the drive train. If a tire needs frequent inflating, they say to have it checked by your Toyota dealer.

Peoria Toyota hours

From Peoria Toyota's website, November 11, 2026. Holiday hours can differ.