Airbag Suspension Options Ford Expedition
I purchased a 2017 Ford Expedition XLT new. I knew it was sag a bit in the tail end before I purchased it, despite being appropriately connected to a weight distribution hitch. I figured I would have...
Forum Discussion
Lynnmor wrote:Groover wrote:
As much as I would like to agree with you the Ford manual says that if the front end rises 1" you use the hitch to bring it back down to a 3/4" rise. I don't understand it or like it but they must have a reason. Due to that I have installed air bags to help level the truck so that my headlights are pointed the right direction and I won't drag the rear as much.
That is not what is in the owners manual. Please read page 208 and you will find that you should bring the front back down by half of what it raised.
Ford very clearly says to use a 25% correction factor on page 34 for the F150 of this 2017 towing guide, the other vehicles are 50%:
https://www.fleet.ford.com/truckbbas/topics/2017/2017_RV_Trailer_Towing_Guide.pdf
CALCULATION EXAMPLE
Vehicle = F-150
H1 = 37 inches
H2 = 38 inches
Correction Factor = 25%
Height Change = 38" - 37" = 1 inch
Reduction =
Amount = 1" x 25% = .25 inches
Height =
Change = 38" - .25" = 37.75 inches
Target Height = 37.75 inches
Personally, I would still like to see at least 75% to 100%. That is still going leave most of the tongue weight on the rear axle which affects your steering by rocking the castor angle back some but it would get more weight on the front brakes which are generally the biggest brakes on trucks without dual rear tires.
