Are Air Bags Appropriate for 2016 Ford F-250 That Sags Under 5th Wheel Pin Weight

Question:

Hi..I have a 2016 F-250 4X4 Crew Cab with the Diesel engine. I also have a 2010 Keystone Outback, Sydney edition model 320 FDB. As far as I can tell, Im well within my limits on towing and payload capacity. The total maximum loaded weight of the trailer is just under 12,000lbs and my truck has a towing capacity of in the 15000 lb. area. the weight of the kingpin is roughly 1800 lbs. and my payload capacity is about 3100 lbs. In spite of this, I do see a noticeable sink or sag when I connect. Its not too bad but when Im driving over bumps in the road, I might feel a bit of a bounce. Im new to this so my question first is if this is normal. My next question is would airbags help me? Are they even needed? I do plan on towing several times a year but I dont want to ruin my suspension. Thank you in advance

asked by: Sergio L

Expert Reply:

5th wheel trailers typically have a pin weight that is 20-25% of their GVWR so a trailer loaded near to its 12K GVWR should have a pin weight more like 2400 to 3000-lbs. Even if your pin weight is only 1800-lb (and even when well within your towing capacity) some squat or sag in the F-250 is normal but this can be effectively compensated for by addition of a rear axle air spring kit and compressor.

The biggest advantage of an air spring/compressor setup is the on-the-fly adjustment capability that lets you tweak bag pressure while you tow. This ability to instantly adjust for changing road conditions (and your own preferences) means the best and most comfortable towing experience without having to pull over to manually change pressure.

I recommend Firestone kit # F2597 which has a 5000-lb maximum capacity (perfect for your needs) and which works with your 5th wheel hitch installation. If your diesel is a short bed you'll also need exhaust sensor relocation bracket # F5722. The Air Command I heavy-duty compressor # F2097 will provide reliable pressure adjustment so you can find the sweet spot for suspension support under all towing conditions. You'll be able to correct for sag and also reduce the bumps and jarring you now feel when towing. Install videos are linked for reference.

expert reply by: Adam R