Sumos or Sway bar

I put Sumos on the Suburban and I love them. Easy to install and they work as advertised. Never tried them on a motorhome but, I suspect that they will od what they say they do.

I had the LiquidSpring system installed on our 2017 Tiffin Allegro Open Road 32SA, and I've written up a series of blog posts about the experience. If you're interested, here they are in order:

https://openroadscapes.com/blog/2017/10/14/from-springs-to-liquidspring-part-1-why-and-why-not
https://openroadscapes.com/blog/2017/10/17/from-springs-to-liquidspring-part-2-the-transformation
https://openroadscapes.com/blog/2017/10/21/from-springs-liquidspring-part-3-road-test

-- Bill

To date, (certainly on the one I drove)just the rear. There is not that much "variable weight" in front compared to the rear axle. And a properly loaded front leaf spring is fine. Yes, the addition of Koni FSD shocks in front helps with both softer ride AND better control.

wolfe10 wrote:

Winnipeg wrote:

wolfe10 wrote:
If considering significantly upgrading an F53 suspension, look at this one:

https://liquidspring.com/rv-suspensions/

The liquid spring system looks cool, and looks VERY expensive to buy and install. Certainly not a DAY project.

Totally agree.

I see their market as the owner who loves their gas coach-- everything except its ride and handling.

Expensive, but sure cheaper than going to a diesel pusher.

I drove an F53 with the Liquid Spring rear suspension at the Chandler FMCA Convention and was very pleasantly surprised by the huge difference in both ride and handling.

There is no ideal spring and shock rate all the time. Over small bumps/expansion joints you want VERY soft. But over big dips, particularly when crossed at an angle, you really want it to control sway. The Liquid Spring allows BOTH.

Is this system on the front and back, or just the back? It would seem that the front is just as important as the rear. I have done mods on ours, and it has to be a complete system, both front and rear to get the best possible results. Modifying the rear does have a noted improvement, but doing similar improvements to the front, gives a total improvement. Getting rid of the bump stops in the front will make the best ride improvement, but you must do something to improve the spring rate on the F53 chassis. The cost of the liquid spring system it more Engineering and development that actual costs.

Winnipeg wrote:

wolfe10 wrote:
If considering significantly upgrading an F53 suspension, look at this one:

https://liquidspring.com/rv-suspensions/

The liquid spring system looks cool, and looks VERY expensive to buy and install. Certainly not a DAY project.

Totally agree.

I see their market as the owner who loves their gas coach-- everything except its ride and handling.

Expensive, but sure cheaper than going to a diesel pusher.

I drove an F53 with the Liquid Spring rear suspension at the Chandler FMCA Convention and was very pleasantly surprised by the huge difference in both ride and handling.

There is no ideal spring and shock rate all the time. Over small bumps/expansion joints you want VERY soft. But over big dips, particularly when crossed at an angle, you really want it to control sway. The Liquid Spring allows BOTH.

wolfe10 wrote:
If considering significantly upgrading an F53 suspension, look at this one:

https://liquidspring.com/rv-suspensions/

The liquid spring system looks cool, and looks VERY expensive to buy and install. Certainly not a DAY project.

Sumos/Timbrens are set and forget, and have a life-time warranty. Air bags are an active system, and if you want finger tip control, it will require an
on-board compressor and a 4 way control panel, which is more expensive. The install is also more complicated. There could also be more maintenance, as the air lines could be damaged, or just age out, and need replacement. The compressor could also give problems, but most are pretty robust now. I do not believe the air bags have a life time warranty, but I could be wrong.
Its your choice, you know the saying, "pay me now, or pay me later".

If considering significantly upgrading an F53 suspension, look at this one:

https://liquidspring.com/rv-suspensions/

Air-Lift also has provisions to make air bags for custom installations. On their website is a link to send in a specific request.

Kelderman makes complete air suspension for F53.