air pressure available from onboard air system?

[Gary&Terry]

I am wondering how much air pressure I can expect from my on-board air compressor.

Good Day,

Gary

[Novice Traveler]

I routinely use mine to air up my tires to 120PSI.

[David Carrol]

Most systems cut out at 120-125 and start pumping again around 100 so getting less than 100 is easy.