PSI (pounds per square inch)

A standard unit of measure for tire pressure.

    See also:

    Under the Hood
    Depending on the model, there are two engine options that can be teamed with a five- or seven-speed automatic transmission. G550's V-8 produces 382 horsepower and 391 pounds-feet of torque and tea ...

    Activating/deactivating Lane Keeping Assist
    You can use the Lane Keep. Asst. function to activate/deactivate Lane Keeping Assist or Active Lane Keeping Assist. •► Press the button on the steering wheel to select the DriveAssist me ...

    Driving on sand
    WARNING Do not reduce the tire inflation pressure before driving through sand. However, if you do so, remember to correct the tire inflation pressure before continuing your trip. Driving wit ...