Auto leveling airbag system??? How important is this?

Cummins12V98 wrote:
PacBrake bags required 5psi empty. Did not notice and difference. Personally never heard of 10 psi min.

I've always wondered what one condition or 1/2 ton truck the minimum air pressure was written for. My dually has overload springs and I've driven many times with the airbag valve stems removed with no damage to my bags. So, I've always assumed that the minimum air pressure was written for a weak or overloaded condition on specific class of trucks.