[StephenConnell]

Interesting. So if my bike tire is at 10 lbs, is that 10 above atmosphere or just 10psi? I think a balloon flubbering arround for 4 seconds then going flat at the office would still be considered a scene. In fact I think your depiction is perfect. Ha.

[ytjohn]

Bike tires are typically inflated to a psi (lbs per square inch). A bike tire is a bad example in this context because most are filled pretty high (80-130psi, mine are 90psi). The average car tire is 30-40psi.

[StephenConnell]

I run my dirt bikes trials tire at about 10 psi rear, and 14 front. Mountain bike tubeless 14-25 psi. So I guess my question was, is a guage measurement above atmospheric pressure? The answer is yes. [0] "Gauge Pressure: The pressure of a system above atmospheric pressure."

[0] https://www.boundless.com/physics/textbooks/boundless-physic...