How Much Air Pressure to Use in Airbags While Towing

Updated 07/03/2020 | Published 10/01/2018

Question:

Hi! Do you have a recommended psi for towing about 3500-4000 pounds loaded trailer, 7x16’ ?

asked by: Ken

Expert Reply:

I can help but unfortunately, I can't really give you an exact psi to tow your 3,500 lb - 4,000 lb trailer as there are just too many factors that go into selecting the correct air pressure. The most important of which however is ride height. According to the owner's manual for the Air Lift LoadLifter 5000 Ultimate Air Helper Springs part # AL88299, if a load is present then you will need at least 25 psi but will want to continue adding air until the truck is level or you have reached 100 psi. You can then adjust the pressure once you get the truck level for comfort/support. When the truck is empty you will need to leave at least 5 psi in the system to prevent the airbags from deforming.

expert reply by: Conner L