See also:

PSI (pounds per square inch)
A standard unit of measure for tire pressure. ...

Underinflated or overinflated tires
Underinflated tires WARNING Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel ...

Important safety notes
WARNING Gasoline is highly flammable and poisonous. It burns violently and can cause serious personal injury. Never allow sparks, flames or smoking materials near gasoline. Turn off the engi ...