What PSI For Firestone Coil-Rite Air Helper Springs With no Load
Updated 02/17/2026 | Published 06/14/2024
Question:
My mecanic throw out the instructions. What is the recommended PSI when not carrying a load.
asked by: E
0
Expert Reply:
Sorry to hear you don't have the instructions anymore of the Firestone Coil-Rite Air Helper Springs # F4135, and I can tell you that when not carrying a load you'll need to have a minimum of 5 psi in the springs.
I have also added a link below to the instructions of the # F4135 if you'd like to go ahead and print a copy to have on hand.
expert reply by:
Kyle S
0
Product Page this Question was Asked From
Firestone Coil-Rite Air Helper Springs - Rear Axle
- Vehicle Suspension
- Towing/Load Leveling
- Air Springs
- Suspension Only
- Light Duty
- Rear Axle Suspension Enhancement
- Firestone
more information >
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Jesse M.
2/17/2026
Hey, did keeping 5 psi in your Firestone Coil-Rite springs work well when you weren’t carrying a load? Knowing how that setup performed could help others trying to dial in their air pressure.