(Tyre Pressure) This is the pressure of the air inside the tyre, it can be measured in pounds per square inch PSI or Bar. Correct pressure for tyres is designed to aid fuel economy as well as safety as under or over inflated tyres can affect the handling of your vehicle.
The twenty-third star in a constellation
PSI is an album by the industrial rock band Pitchshifter, released in 2002 (see 2002 in music). Their previous two albums had been released on a major label, but this was released by the minor Sanctuary Records. "Eight Days" and "Shutdown" were released as singles.
pounds per square inch: a unit of pressure
the 23rd letter of the Greek alphabet
Supposed parapsychological or psychic faculties or phenomena
The twenty-third letter of the Greek alphabet (?, ?), transliterated as ‘ps.’
Flat tire
This screw caused a slow leak (18 psi while at work). Fortunately, the tire held air well enough that I could drive to get it fixed without losing any pressure.
Check pressure
Don't fill the tire all the way, check the pressure a couple times. I went to about 20 PSI and then used the soapy water test to check for leaks (next step)