Well i just installed a set of air bags on my 2008 dually i know the max is 100 psi and the min is 5 psi but what i want to know is what pressure do you guys run in them when your not loaded and just running around town

 

what know body knows what pressure they run in the air bags when not loaded up

 

With my 36 ft 5th wheel I started at 30lbs and now run 25lbs, but I dont load the hell out of it, pin weight right around 2000lbs, now mine is only a 2500 short box, put your load on the truck and add air till she sits level, thats the best way. make sure both side are equal.

 

They don't want you to run with them completely empty of pressure, I think it is hard on the bags. But when running with no load, I would keep them at the minimum at 5 psi.

 

With no load I use zero pressure in the bags. With my 32 foot 5th wheel I run 45 - 50 psi to level the truck. One reason for the high pressure is that I have softer leaf springs in the back (Carli)
I raise or lower the pressure from inside the cab. Take a look at my gallery if you want to know how I do this.

 

I run 5# in them when I'm empty, & 60-75# when I'm loaded.

 

I run 10 PSI with no load...Thats the min PSI for the air bags on my truck..

 

thank you for the posts right now i am running 20 psi empty and it seem like it is to stiff so i will drop it to 10 psi and try that

 

Sorry, I haven't been on in a couple days ...... getting ready for vacation.

I run mine at 15 psi and have had no problems.




-Kris

 

What brand do you have?? I have the Pac Brake..They say min 10 PSI but they have gone down to 5 PSI...Firestone air bags say min 5 PSI...

 

i also have the pacbrake and run 5 or less when empty. i have been running zero for quite a while now.

i'm pretty sure running empty is fine as long as you don't go high speed off-roading. i think the only reason to have some pressur ein there is to prevent bottoming out and damaging the bags. as long as you don't drive to make it bottom out, you should be fine.

i tried 20 psi, then 15, and it was still really 'bouncy' for me. i eventually just put enough in to relax the springs but no more. seems to be good so far.

another thing to think about is your tire pressure. if you are unloaded, there is no need to have them pumped up anywhere near max pressure. i am running 55 up front and 35 in the rears while unloaded - this seems to have helped with the ride too.

 

I am running the Firestone brand air bags so i will try 10 psi and see how it works

 

I have a set of AIrlift bags. Empty, I run 5psi. With the cabover camper, I run ~60psi. Camper AND trailer with the car, 75psi. Truck, camper, car trailer, and car, grosses 17k. Rear axle weight was 8k.

Tony

 

5 psi on my Firestones when empty.

 

When empty, I run 0 psi. Even 5 psi gives me a choppy ride when completely empty.