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Old 01-25-2021, 01:46 PM   #1
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2021 25' Flying Cloud
Bentonville , AR
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Suspension Upgrades?

Hey all, I have a 25' flying cloud on the way. My TV is a 2016 f150 lariat V8 4x4. I've never towed anything bigger than an aluminum fishing boat. I'm wanting to upgrade my rear suspension and anything else I can to make the towing as easy comfortable and safe as possible. I did some searching through the forum but I don't even know where to start!
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Old 01-25-2021, 02:10 PM   #2
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The easiest thing you can do is make sure the tires can carry the load, at least a 'D' rated light truck tire.
You can 'up-grade' springs & shocks to a point, but other design factors will limit the amount.

Get the TV actual loaded weight numbers, add at least 250-350lb to the published AS tongue weight and calculate from there.

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Old 01-25-2021, 02:43 PM   #3
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We have a 2018 F-150 Lariat with the EcoBoost. No modifications and I think it tows our 25' AS like a dream. Had a Tundra before and I prefer the ride quality/feel of the F-150. I'd encourage you to try out your combo before upgrading too much. You may find the stock configuration is up to your standards.
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Old 01-30-2021, 09:44 AM   #4
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Rear sway bar, upgrade rear shocks to at least Rancho standard height progressive shocks.
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Old 01-30-2021, 11:28 AM   #5
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Careful adding a rear sway bar. The bar allows the inner tire to unload in hard cornering increasing risk of oversteer and jackknife when towing. Since the 150 is on the light side relative to the trailer, oversteer is a real risk. It is why the engineers don't put a rear sway bar on the truck to begin with. It will improve handling when not towing but degrade it while towing.

Tires with stiffer sidewalls are a good choice or run 7 psi higher pressure in the rear if you have the pressure and load capacity. The 4X4 springs are a bit soft for towing but that affects passenger comfort more than towing safety. Bob had great advice.
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Old 01-30-2021, 11:40 AM   #6
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Quote:
Originally Posted by Ekremm View Post
Hey all, I have a 25' flying cloud on the way. My TV is a 2016 f150 lariat V8 4x4. I've never towed anything bigger than an aluminum fishing boat. I'm wanting to upgrade my rear suspension and anything else I can to make the towing as easy comfortable and safe as possible. I did some searching through the forum but I don't even know where to start!
What is the Payload Capacity of your F150? It on the driver’s door frame. Your 25’ is notorious for being overweight. Our tongue weight on a 2014 FC 25 FBT with a ProPride hitch was 1,250+ pounds.
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Old 01-30-2021, 12:25 PM   #7
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What is the Payload Capacity of your F150? It on the driver’s door frame. Your 25’ is notorious for being overweight. Our tongue weight on a 2014 FC 25 FBT with a ProPride hitch was 1,250+ pounds.
He didn't say whether he was getting a front or rear bedroom. The tongue weight gain is not as bad on a rear bedroom.
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Old 01-30-2021, 01:28 PM   #8
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In addition to payload considerations, Ford has guidance limiting tongue weight and it is generally 10% of the towing limit but it best applies when at the towing limit, so you can safely go a bit over tongue if you are well under towing limit.
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Old 01-30-2021, 01:33 PM   #9
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Originally Posted by BayouBiker View Post
Careful adding a rear sway bar. The bar allows the inner tire to unload in hard cornering increasing risk of oversteer and jackknife when towing. Since the 150 is on the light side relative to the trailer, oversteer is a real risk. It is why the engineers don't put a rear sway bar on the truck to begin with. It will improve handling when not towing but degrade it while towing.

.

Interested in where that comes from. I see them on the dodge trucks and SUVs?
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Old 01-30-2021, 02:36 PM   #10
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For a detailed discussion, if you're interested you may want to look at a couple web articles on managing understeer gradient and in particular ways to reduce oversteer. The basic idea is that to reduce oversteer you need to increase cornering stiffness of the rear tires. Vertical load is a primary factor so anything that unloads either of the rear tires will worsen oversteer. The rear sway bar reduces body roll by pulling up (unloading) the inner hub and pushing down on outer hub in a hard corner event.

My Ram 3/4 ton does not have a rear sway bar. It will depend on a number of factors but vehicles marketed for max towing generally will have small or no rear sway bars.
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Old 01-30-2021, 02:51 PM   #11
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Originally Posted by BayouBiker View Post
For a detailed discussion, if you're interested you may want to look at a couple web articles on managing understeer gradient and in particular ways to reduce oversteer. The basic idea is that to reduce oversteer you need to increase cornering stiffness of the rear tires. Vertical load is a primary factor so anything that unloads either of the rear tires will worsen oversteer. The rear sway bar reduces body roll by pulling up (unloading) the inner hub and pushing down on outer hub in a hard corner event.

My Ram 3/4 ton does not have a rear sway bar. It will depend on a number of factors but vehicles marketed for max towing generally will have small or no rear sway bars.

Interesting. They market themselves for towing applications in most listings for sale by their MFG.
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Old 01-30-2021, 04:22 PM   #12
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I agree they are marketed for towing, I'm only suggesting they are not likely the max tow versions as those set up for max tow will generally be outfitted to have as much rear cornering stiffness as possible, but again there are a lot of other variables involved.
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Old 01-31-2021, 07:57 AM   #13
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I have a 2014 F150 FX4 EcoBoost with tow package and a Classic 28 foot. I upgraded the suspension with Cooper Discoverer A3 tires rated for extra load (117T), Bilstein 5100 shocks front and rear, and the Firestone Ride-Rite Air Springs to keep things level. I also upgraded the brakes with Power Stop Z36 Extreme Truck & Tow 6-Lug Brake Rotor & Pad Kit (front and rear) for driving in the mountains.
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