VB Air Suspension for Motorhomes

VB Air Suspension for Motorhomes

Air suspension is very popular with motorhome owners.

Options include full air suspension, semi air suspension and uprated coil springs. On this page we have summarised the benefits of each product.

All the kits fitted by Rosmia’s engineers bolt-on to existing chassis mounting points and require no welding, cutting or drilling so your vehicle warranty remains intact as do the good looks of your motorhome.

Crucially all  VB Air Suspension kits come with the necessary certification and approvals including VOSA and VCA.

Why not request this useful little fact sheet? It shows you at- a- glance the benefits of VB-FullAir, VB-SemiAir and VB-Coilspring

Please book a motorhome health check if you would like to discuss the products suitable for your motorhome.

vb-airsuspension-logoWhy consider VB Air Suspension?


As a motorhome owner, you will have no doubt experienced intense crosswinds while driving and, when overtaking HGVs. At any speed your motorhome can become unstable. With air suspension your motorhome is more stable and less sensitive to crosswinds.

With its high centre of gravity your motorhome can lean and roll when cornering which is unpleasant and unsafe for you and your passengers. When air suspension is installed in your motorhome you will notice a significant reduction of leaning and rolling when cornering.


Perfect ride height

The weight of a motorhome can vary depending on whether it is fully loaded or not. When fully loaded you are driving your vehicle on the bump stops and because the steel suspension cannot be adjusted you feel every crack, hole and undulation in the road. When unladen, your motorhome can feel light and unstable.  With air suspension the air bags can be inflated manually or automatically depending on the system you choose. Whether fully laden or unladen your motorhome will be at a perfect ride height with an even distribution of weight.

VB-FullAir – benefits


VB-FullAir is a fully automatic (adjustable) solution for suspension problems.

The existing leaf, coil-spring or torsion bar suspension is replaced by a complete air-suspension system (including air springs, shock absorbers, a compressor and an electronic control unit). The new air-spring system is controlled electronically via height sensors, a central control unit and a compressor and valve block.

Rosmia fits systems for any of the following: the rear axle only (VB-FullAir 2C) Front only, and both front and rear axles (VB-FullAir 4C).

On the road

  • Road holding and stability is greatly improved as is comfort.
  • The VB-FullAir system automatically monitors and corrects your motorhome’s ride height. This ongoing process of monitoring and correction makes your ride comfortable and safe, whether your motorhome is empty or fully laden.
  • Ferry Mode. This raises the back of your motorhome allowing for clearance when going up and down ramps.
  • Off Road gives a higher vehicle and more ground clearance for off road terrain up to a driving speed of approx. 25km/h.

When stationary

  • Tilt Function. This enables the waste-water tank to be emptied in a faster, cleaner and much more efficient manner by leaning the vehicle to one side.
  • It is possible to raise and lower the height to ease loading and unloading.
  • Auto Level means an end to manual levelling and chocks. With the one-touch “Auto Level” function, VB Air Suspension 4C air suspension ensures that your motorhome finds its perfect level quickly and easily. So you can arrive and relax!

Contact us today to find out more and to talk to one of our engineers about your motorhome.

VB-SemiAir benefits

VB-SemiAir suspension has been designed for motorhomes with heavy, or uneven loading, or for applications where the maximum payload is required for your motorhome.

  • The standard leaf springs are not necessarily designed to cope effectively with full axle loading all the time and often the standard suspension can struggle. VB-SemiAir provides a cost effective way of uprating the suspension to cope with the loading requirements of a fully fitted out motorhome.
  • It acts as a helper to the original rear springs, keeping the vehicle level and stable. Even when your motorhome is fully laden, each air bellow on either side of the vehicle can be individually controlled for even ride height.

Contact us today to find out more and to talk to one of our engineers about your motorhome.

VB-Coilsprings benefits

Rosmia’s engineers also fit uprated CoilSprings to motorhomes.

  • Many motorhomes sag at the front, nose down, suffering from excess weight, making them more likely to hit the bump stops.  Uprated coilsprings can provide a 50mm-80mm increase in ride height. This increases the clearance and stability of the vehicle
  • They work well in conjunction with the FullAir and SemiAir systems at the rear.

Book your free motorhome healthcheck today and see our Demonstrator vehicle in action