Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.