Air Suspension (Air ride replacement bags)

[MJB_Hummer]

Well, If I am understanding your question correctly, then yes. I could tell by looking at the vehicle. When fully inflated, sitting flat, there is about 7-8 inches between the top of the tire and the wheel well. When it was flat, only about half that or less. Very visably noticable. Mine was not leaking bad enough to have the pump run constantly. The pump was running noticably more often and I was getting the error message on the dash every once and awhile: "Service Air Suspension".
Also of note, I live in San Diego so most of the time warm. This winter we did have some cold spells, especially out east where I live. When it was cold out, I would come out in the AM and the thing would be flat and the pump would take about 5 min or so to pump back up. Then when I would get work, it would stay up all day. The bag was leaking from the bottom where the seam is and where it rolls up on itself. That is where it was cracking. You really could not see the damage until it was removed from the vehicle.