Can PacBrake Air Bags Be Run At Zero PSI?
Updated 09/26/2025 | Published 04/24/2025
Question:
Is there a minimum air pressure? Ive heard the ride is bad on 0.
asked by: Griff S
Expert Reply:
Good question Griff!
The Pacbrake Alpha HD Pro Air Bag Suspension Kit # PB89SV has their Internal Jounce Bumpers which means you technically can run them with 0 air pressure. However, I don't think I would do this as it would just leave those internal jounces to take up the slack and they can be pretty stiff. Personally, I would stick with the typical 5psi when unloaded rule.
You didn't mention it, but what is the year, make, and model of the vehicle you are wanting to put these on?
Product Page this Question was Asked From
Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs
- Vehicle Suspension
- Towing/Load Leveling
- Air Springs
- Suspension Only
- Heavy Duty
- Rear Axle Suspension Enhancement
- Pacbrake
more information >
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Lazer S.
9/26/2025
Hey Griff, did you find a good air pressure setting for your vehicle with the Pacbrake Alpha HD Pro Air Bag Suspension Kit? I'm curious to know how it worked out for you because it could help others looking for the best setup.