Good Sam Club Open Roads Forum: 2020 Ram 3500 OEM Rear Air Suspension
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 > 2020 Ram 3500 OEM Rear Air Suspension

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otrfun

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Posted: 07/08/20 08:07am Link  |  Quote  |  Print  |  Notify Moderator

Quote from ramtrucks.com ref the 2020 Ram 3500 rear air suspension:

" . . . automatically adapting to shifting loads and changes in road camber, in addition to providing a parallel hitch between truck and trailer."

Ram has had an optional rear air suspension for a number of years. Is this camber feature new for 2019-2020? Wonder if it has the ability to automatically compensate for an in-bed truck camper that is heavier on one side?

BurbMan

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Posted: 07/08/20 08:44am Link  |  Quote  |  Print  |  Notify Moderator

I wouldn't see why not, clearly it's got ride height sensors if it can compensate for road camber and hitch squat. What's interesting is that it says it can compensate for "shifting loads" so I bet it's a huge help in controlling side-to-motion on uneven roads with the camper onboard.

I was just shopping 2015-2017 Rams and didn't see a single one with air suspension, so either it wasn't available yet or nobody ordered it....would be interested if anyone here on the forum has it on their truck.


2015 Ram 3500 4x4 Laramie Crew Cab Long Box, Cummins diesel

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carringb

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Posted: 07/08/20 09:07am Link  |  Quote  |  Print  |  Notify Moderator

Sounds like they are using the trucks built-in accelerometer (usually used for stability control), rather than a height-sensor. If so, this is great, because the height-sensors tend to be the most finicky component on full-air-rides. The mechanical arms get damaged from road debris, and the magnetic ones have to be adjusted perfect or they won't work either.


Bryan

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JRscooby

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Posted: 07/08/20 09:35am Link  |  Quote  |  Print  |  Notify Moderator

My question is if would change ride height independently side to side fast enough to control motion, how in the world do they move the volume of air that fast?
I could be wrong, but that feature sounds like something that sells better than works...

Groover

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Posted: 07/08/20 10:37am Link  |  Quote  |  Print  |  Notify Moderator

Unless they have one heck of an aircompressor for the system it won't be able to respond fast enough to control motion. For rapid response dynamic shocks are generally needed. On the other hand, an air system will have plenty of time to respond to an off center load, including a high load that is pushed off center by road with a lot of camber for drainage. I would expect it to make the truck parallel with the road, not vertical to the earth unless they have gotten really fancy.

Cummins12V98

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Posted: 07/08/20 11:01am Link  |  Quote  |  Print  |  Notify Moderator

I have heard good reports from truck camper owners. I haul 6k pin with ZERO squat. LOVE the system, 5 years with zero issues!


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Grit dog

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Posted: 07/08/20 02:57pm Link  |  Quote  |  Print  |  Notify Moderator

Don't everyone get too wrapped around the proverbial wheel here. Fairly certain they're still just ride height sensing linkages. Not going to level your truck up on an off camber trail.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

NJRVer

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Posted: 07/08/20 04:06pm Link  |  Quote  |  Print  |  Notify Moderator

BurbMan wrote:

I wouldn't see why not, clearly it's got ride height sensors if it can compensate for road camber and hitch squat. What's interesting is that it says it can compensate for "shifting loads" so I bet it's a huge help in controlling side-to-motion on uneven roads with the camper onboard.

I was just shopping 2015-2017 Rams and didn't see a single one with air suspension, so either it wasn't available yet or nobody ordered it....would be interested if anyone here on the forum has it on their truck.



My 2017 has rear air.

MikeinSA

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Posted: 07/09/20 07:37am Link  |  Quote  |  Print  |  Notify Moderator

We have a '16 megacab dually with the factory air suspension. Hopefully the '20 levels side to side, but ours doesn't. We have probably 50k miles with an Arctic Fox 811 in the back. It's heavier on the passenger side which causes about 1" of difference measured at the airbag locations. Add in normal road camber, and it's a noticeable lean.

The other problem with the factory air and a truck camper is the sway - it's pretty pronounced. Good news is that Hellwig has a new sway bar compatible with factory air, and it's worked great. We have maybe a few thousand miles with this new sway bar and it has really made a noticeable difference.

The big advantage for us with the factory air setup, is that this is also our primary (only) vehicle and it really makes unloaded driving much, much better than conventional suspension.

This is our third truck camper and truck over maybe 20 years. We travel quite a bit and live in them for months at a time, so I guess we're fairly knowledgeable.

If you're primarily driving with the truck camper I probably wouldn't recommend the factory air, and definitely not if it doesn't now level side to side.

* This post was edited 07/09/20 07:50am by MikeinSA *


2016 Arctic Fox 811
2016 Ram 3500, Cummins/Aisin, Mega Cab, SB, DRW

FishOnOne

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Posted: 07/11/20 05:21pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

I have heard good reports from truck camper owners. I haul 6k pin with ZERO squat. LOVE the system, 5 years with zero issues!


Some do fail and I'll bet as they age more will fail

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