Air suspension

[Rds559]

As anyone got semi air suspension on the rear of their motorhome if so what do you set your bar pressure at for a good ride. Thank you.

 

[Two on Tour]

As anyone got semi air suspension on the rear of their motorhome if so what do you set your bar pressure at for a good ride. Thank you.

Our back axle is loaded to about 2070kg according to our last trip to the weighbridge and I run our rear air assist at about 2.5 bar (36.32 psi) for a comfortable and stable ride and I up it to 3 bar (43 psi) if we are on some rough old roads our there are strong crosswinds. We are a 3850kg rated van.
My controls are on the dash, so I can adjust the pressures while on the move.

 

[Mikeco]

The pressures might be different for each side of the van I know that mine are as there is more weight on one side and I suspect that most vans will be similar. I have 3 bar on one side and 2.5 on the other which gives the same distance showing above the tyres and means that the van is level.

 

[donkey]

There is no normal pressure. You should experiment until you find the one that suits you and your vehicle.

Geoff

 

[Mikeco]

There is no normal pressure. You should experiment until you find the one that suits you and your vehicle.

Geoff

That’s true and I found out that if I put too much in then it made the ride harder so I would say start at the minimum which on mine is 0.7 bar and work up until it feels okay.

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[VXman]

2.5 bar. I have a lot of weight in the back, moped and 2 electric bikes.

 

[Brize]

Mine was factory fitted with the recommendation to run at 2 bar. However, as Donkey states there is no set measure and you should experiment. I am finding my setting a tad high as axle weight is not too great, and am going to reduce to 1.5 bar and see how that goes for a while.

Regards,

 

[Spanner]

Our rear axle usually weighs about 2000kg and I inflate the Dunlop air suspension to 34psi

 

[RustyRuss]

2.5 to 3 bar for our 3750kg Autotrail Apache, just depends on how many pairs of shoes the Memsahib has smuggled aboard!!

 

[Landy Andy]

3bar for motorways, drop to 2.5, or even 2 if lumpy roads.

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[Guigsy]

There's lots of sizes of airbags. Quite large differences in ride height. And quite a range of axle loads. There's no universal pressure. For my system, the maximum rated pressure was only half way up the gauge, so you can't even aim for the middle.