Kayteg1 wrote:
Been to Pismo Beach and have seen truck doing over 40 mph on dunes.
Airing down and especially up can be annoying, so consider that for straight driving with 4WD you might not need it.
I tried that, while pulling 3000 lb Airstream and was OK on wetter sand close to water, but got stuck on turn in dry stuff.
I wonder how the airing down with crossfire works AISURFFISH ?
The manufacturer says the system have blow valves, that will close when the air goes away too quickly.
notice the additional 2 valves below

Mine were specially made there is a special valve right before the pressure sensor that allows you to air down the inner tire one at a time it's the same valve that you would install if you had electronic sensors that you needed to add on the valve stem..
I was able to speak with someone at the factory and they took care of it no extra charged for the additional valve or any of that really good people to deal with.
I air down the hose prior to the large round valve/sensor.. but I air up on the single middle valve stem