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Thread: Advise on pressure for Firestone Air Bags

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    Advise on pressure for Firestone Air Bags

    Hello,

    We have a 2010 Bighorn 3610RE that we are towing with a 2012 Ford F250 4x4 Diesel. I recently added a set of firestone airbags on the truck and are having problems with finding the right air pressure for the bags.

    I started with 50 lbs but the trailer seemed to bounce and items fell out of cupboards. I lowered to 42 lbs and it didnt seem to solve the problem.

    There does not seem to be any information that tells me what is correct. Recently I meet an RV'ER who said I should increase the pressure, not decrease it. There is some formula I think about tongue weight.

    Anyone have any suggestions or comments?

    Thanks

    Tom

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    Moderator cookie's Avatar
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    Re: Advise on pressure for Firestone Air Bags

    I keep my air bags inflated to 38 psi when unhitched. When I hitch up the truck is level.
    The idea is to keep the truck level. 42 and 50 psi seems kinda high.

    Peace
    Dave
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    Founding Massachusetts Chapter Leader recumbent615's Avatar
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    Re: Advise on pressure for Firestone Air Bags

    Tom,


    Welcome to the Family. The Air Bags are for leveling the load on your truck. What you want to do is find a level location and stand back from the Rig and see if your truck is level, if the back is hanging low then add air to the bags until it is level. with my Rig I normally run about 40-60 LBS depending on what I have in the back of the trailer ( empty I need more air due to the increased Pin Weight ).

    The Air bags are not going to help with the bounce on the trailer - Bounce is a factor of the suspension on the Rig and the push/pull on the Hitch. Much improvement can be found with a Air Ride Pin Box but I will let others with experience with those speak to that.

    You will find many people here very willing to provide assistance in great detail.

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    Senior Member wingfoot's Avatar
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    Re: Advise on pressure for Firestone Air Bags

    You can contact Firestone ride rite division for some insight:

    1.800.247.4337 Follow the voice prompts.

    BTW: Firestone recommends a minimum of 5psi unloaded.
    Larry, Suzan and our two furry friends
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    Re: Advise on pressure for Firestone Air Bags

    I talked to the factory technician and he said there is no magic chart or formula. He said to make the truck level and then attach the trailer. Afterward increase the air pressure to maybe sixty or 70 lbs and back down as necessary.

    Too soft a ride will create more bounce he said. So maybe at 42 lbs I was too light on air.

    Thanks for the phone number and advice.

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    Re: Advise on pressure for Firestone Air Bags

    When I had over 40 psi, the ride was rough. I didn't realize how rough until I backed off the pressure and remained level.
    The magic formula is to keep your truck level when hitched up.
    Play around with it till you find what works for you.

    Peace
    Dave
    Dave and Mary
    and C. J.
    2011 Bighorn 3585RL

    2013 RAM 3500, CC, DRW, Aisin
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    New Jersey Chapter Leaders porthole's Avatar
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    Re: Advise on pressure for Firestone Air Bags

    When I had the airbags in the GMC I set the bag pressure so the truck sat about 1" lower then the unloaded height.
    Try that and conside upgrading the shocks.
    Ford shocks are kind of a weak point in the ride quality.
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    Senior Member wingfoot's Avatar
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    Re: Advise on pressure for Firestone Air Bags

    Quote Originally Posted by porthole View Post
    When I had the airbags in the GMC I set the bag pressure so the truck sat about 1" lower then the unloaded height.
    Try that and conside upgrading the shocks.
    Ford shocks are kind of a weak point in the ride quality.
    Very good point Duane..If I remember (dangerous for me) the shocks on OEM application are a single action shock. Shortly after I got my truck I replaced the OE shocks with Belstien's a double action shock.
    Larry, Suzan and our two furry friends
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    2012 F350 6.7 PSD, 4X4, Ultimate Lariat upgrade, Crew Cab LWB, 3.73Gears,
    Satellite Radio, Navigation, Dexter 7000# axle replacement with "never fail bushings". 507 TSM tire monitoring system.

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    Doug S
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    Re: Advise on pressure for Firestone Air Bags

    Like others have said, depends on your rig. I have a similar setup only older truck, and set mine at 35 pounds unhooked.
    DougS

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    New Jersey Chapter Leaders porthole's Avatar
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    Re: Advise on pressure for Firestone Air Bags

    I forgot to mention I also upgraded the shocks to Bilsteins all around.
    New Jersey 2017 Chapter Rally

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    2009
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    2010
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    2011
    - 6
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