2020 Ram 3500 OEM Rear Air Suspension

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

Link

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.

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.

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.

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

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.

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...

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.

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.