Archive for sagging suspension

VB-CoilSpring suspension: Everything you need to know

VB-CoilSpring - Coil spring suspension - RosmiaCoil springs to support your suspension

VB-CoilSpring is the ideal suspension solution for vehicles that are constantly heavily laden but don’t carry variable loads. The addition of the VB-CoilSprings will increase your vehicle’s ride height, improve stability and reduce body roll and pitching. Vibrations and bumps on the road are also better absorbed, providing a more even ride.

Why VB-CoilSpring?

Your suspension is a critical component for the safe running of your vehicle, so if your original suspension system is unable to support its laden weight and ride at an even level, its movements can feel unstable and abrupt. The vehicle can end up sagging and you risk hitting the bump stops or wearing out the tyres. VB-CoilSpring is the ideal suspension upgrade for vehicles that are always heavily laden but don’t carry variable loads because it’s a non-adjustable system.

Download the product sheet for VB-CoilSpring.

TowingRide Height

Vehicles that sag under excess weight are more likely to hit the bump stops, resulting in poor vehicle handling and an uncomfortable ride. VB-CoilSpring increases your vehicle’s ride height under load, preventing it from hitting the bump stops and improving ground clearance.


VB-CoilSpring at the rear is a particularly good choice if your vehicle is solely and constantly used for towing, because the hitch-weight of a trailer can drag the rear end of your vehicle down, causing it to sag. The addition of rear VB-Coilsprings will help to even out your ride height under load and improve road handling. For an adjustable solution (if your vehicle is only occasionally used for towing) VB-SemiAir or VB-FullAir may provide a better solution.

vb coil spring suspension - rosmiaVB-CoilSpring suspension installation

In vehicles that already have coil spring suspension, the original coil springs are removed and replaced with the reinforced VB-Coilsprings; whereas in vehicles with leaf suspension, additional coil springs are mounted to the existing leaf springs, reinforcing the original suspension. Your VB-CoilSpring kit will come with all the necessary certification and credentials, including VOSA and VCA, so you can rest assured of the quality of your upgraded suspension system.

Get in touch

As the UK’s longest-serving VB-Airsuspension Premium Dealer, we are experienced and fully accredited installers who work with competence and care. Contact us if you’d like to discuss the benefits of a VB-AirSuspension system for your LCV. Our team can talk through your requirements and advise on appropriate recommendations.

Technical Tip: The right reinforced coil spring for your vehicle.

VB-CoilSpring - Coil spring suspension

Helper and reinforced coil springs – also known as the VB-CoilSpring – are suspension systems that support or reinforce the existing suspension in order to correct a suspension problem. Is your vehicle always (heavily) laden? For example, do you regularly travel in a service vehicle – so your vehicle is your workshop and transport combined? In this case, the VB-CoilSpring can be an excellent option.

Two coil spring versions available

Our VB-CoilSpring is available in two versions: the replacement spring and the helper spring.

  • The replacement spring
    • The name ‘replacement spring’ more or less speaks for itself. When fitting a replacement spring, the original coil spring is ‘replaced’ by a reinforced version.
  • The helper spring
    • When a helper spring is fitted, the original suspension is retained. A helper spring is always installed alongside the original suspension and acts to reinforce the original suspension.

Replacing the original coil spring with a replacement spring – or installing a helper spring – will ensure that your vehicle returns to its original (or higher) ride height in both cases. The spring travel will increase, stability is improved and comfort enhanced. The reinforcement to the spring force is permanent and cannot be adjusted, which means that the VB-CoilSpring is the ideal option for vehicles that are always (heavily) laden.

Which coil spring version is best for your vehicle?

For vehicles with coil springs, either a helper spring or a replacement spring can be fitted. In the case of a vehicle with leaf springs, it is only possible to fit a helper spring.

Precise axle weights are required to then determine which version you need for your vehicle. Based on this, you will get an appropriate and specific recommendation on whether the VB-CoilSpring is the best option to solve your suspension problems. To get the precise axle weights, the vehicle needs to be weighed on a weighbridge or on weighing plates in a garage. Unfortunately, the vehicle typeplate is not sufficient here, since it only states the maximum permissible weights, not the exact weights. Our engineers at Rosmia will be able to advise you accordingly based on these precise axle weights.

Looking for more detailed information? Check out the VB-CoilSpring brochure here or contact us directly where we will be pleased to assist you further.

VB-Airsuspension: Rosmia’s first and only choice


Rosmia is the UK’s longest-serving VB-Airsuspension Premium Dealer. But why? What makes the VB-Airsuspension range of products superior to any other?

Well, for one, its innovative range of systems offer air suspension upgrades for a wide range of motorhomes and LCVs, meeting the fast-growing demand for increased comfort, better driveability and improved safety on the road.

There’s a VB-Airsuspension product to meet your needs

Upgraded air suspension systems are no longer seen as a luxury, offering improved safety and comfort for a variety of vehicles, including minibuses, motorhomes and wheelchair-accessible vehicles. Finding the right system for your vehicle will depend largely on what you drive and your average payload.

As the market-leading air suspension brand in the light commercial vehicle sector, VB-Airsuspension is the preferred partner to key vehicle manufacturers such as Volkswagen, Ford, Renault, and Mercedes-Benz. It is also the European market leader in air suspension systems for almost every make and model of motorhome in production today.

VB-Airsuspension for LCVsVB-Airsuspension applications

VB-Airsuspension systems can be installed in pre-owned or new vehicles and can be used across a wide range of situations and applications, including car transporters, commercial vehicles, motorhomes, animal transport, off-road vehicles, passenger vehicles, emergency rescue vehicles, wheelchair accessible vehicles and service vehicles.

Innovative solutions

VB-Airsuspension is known for its innovative design solutions, as well as its commitment to research and development in air suspension solutions. All systems are rigorously tested and adhere to the most stringent safety standards, ensuring you experience a smoother, safer ride with complete peace of mind.

VB-Airsuspension for motorhomesGet in touch

As the UK’s longest-serving VB-Airsuspension and E&P Hydraulics Premium Dealer, we are experienced and fully accredited installers who work with competence and care. Contact us if you’d like to discuss the benefits of a VB-Airsuspension system for your LCV, motorhome or campervan. Our team can talk through your requirements and advise on appropriate recommendations.

Call our team on 01444 880022 or email us at Alternatively fill out our simple Contact Form and we’ll get back to you ASAP.

A suspension solution for almost every application

VB-Airsuspension has the right product available for more or less every application and/or (suspension) problem, including for vehicles that do a specific job. Many of these come up against regular problems that can negatively impact the role they are meant to perform. Similarly, there are cases where it’s a question of: “Surely, there’s a much easier way to do this?” or “Couldn’t this be made much more convenient or comfortable?”. Motorhome owners, drivers of emergency vehicles (e.g. ambulances), drivers of car transporters and other vehicles regularly complain of issues that needlessly make their job harder, and sometimes they find the vehicle they use is missing certain functionality. And, beyond that, you have to consider wheelchair accessible vehicles, animal transport and other specialist vehicles. Here too, a range of improvements can often be fitted in terms of safety and comfort, both for the driver and for any passengers. A selection of our applications are described here:

VB Air Suspension Applications


The ultimate means of transport for those who want to take their own road and have the freedom to keep driving or stop whenever they want. Strong crosswinds, instability in some driving situations, vehicle drift and rattling in the interior are some of the common issues experienced by motorhome owners. Issues that are easy to resolve with one of our advanced suspension systems. When you’re heading off for a well-deserved break, you don’t want unneeded stress because your motorhome does not feel comfortable or safe on the road.

Passenger transport – Minibuses

Sometimes your passengers – and you as the driver – will be travelling for many hours on end. In this case, your passengers must be conveyed as conveniently and comfortably as possible. When you think of a comfortable minibus or coach, the first thing you think of is probably having enough legroom and good onboard facilities. But, if a journey is perceived as uncomfortable, it’s usually not to do with facilities or lack of them, rather factors like noise from the interior and being able to feel unevenness and bumps in the road. The products from VB-Airsuspension offer various solutions to make the journey as comfortable as possible for you and your passengers.

Car transport

Safety for pedestrians has been improved by the long, low bonnet on modern vehicles. However, this creates extra challenges for car transporters and breakdown trucks when loading and unloading vehicles. A big ramp angle and the lack of a kneeling function frequently make this process more difficult. When transporting vehicles, safety is clearly of the essence for car transport and breakdown firms. Extra care must be taken when loading and unloading, and this is not always an easy task. When attending to someone who is stuck at the roadside, the breakdown truck driver will want the customer to feel reassured that their vehicle is being handled properly. The vehicle must effectively meet the requirements of the car transport or breakdown firm so that drivers can get on with the job in hand without any unnecessary worries. Comfort and convenience for the customer and for the breakdown or car transport driver – that’s what our products are about.

Animal transport

Stress is a significant risk factor in animal transport. When transporting animals, it’s not just about a comfortable journey for you, it’s about what’s good for your passengers too. Animals are highly sensitive and will feel every pothole and bump in the road. A sense of instability and a steep ramp can also cause stress for animals. Air suspension makes the journey smoother for both animals and humans. Your animal will arrive more relaxed and you will have a more comfortable ride too, all because of a good suspension system.

Emergency service vehicles

Emergency service vehicles, such as ambulances, regularly travel fully laden and are fitted out with high-tech, weighty paramedic equipment. We all know that these vehicles are critical to saving life and limb and, in an emergency, they need to get to the patient and convey them to the hospital as quickly as possible. So, the last thing the driver needs is a vehicle where the access is too high. Stability and safety are of key importance in an emergency. The driver must be able to rely on the vehicle to perform at its best and to be easily manoeuvrable thanks to a solid suspension system.

Wheelchair accessible transport

When conveying passengers, you want the journey to be as comfortable and safe as possible. Passengers should feel comfortable and confident at all times as they travel to their destination. It is not always easy to get the weight distribution right when the vehicle is carrying someone in a wheelchair. If the weight cannot be distributed evenly with an unbalanced or maximum load, this can cause the original suspension to ‘sag’ at the rear of the vehicle, with a detrimental effect on ride comfort. A constant ride height is essential for both the driver and the wheelchair user, something that can be easily achieved with one of our products.

Service vehicles

A service vehicle is your workshop and transport all rolled into one. To be able to provide a full service and for peace of mind, you want to have all your tools and materials to hand wherever you are so that you are prepared for every eventuality when attending a customer. The only problem with this is that your vehicle is frequently heavily laden. Your materials will not usually be evenly distributed in the vehicle, which can result in an unpleasant driving experience since the vehicle is lopsided. Air suspension can remedy this by automatically adjusting your vehicle in the horizontal plane. So, you get a more comfortable and safer ride.

VB-Airsuspension (air) suspension systems provide solutions for your suspension problems, allowing drivers and passengers to enjoy optimum ride comfort, increased stability and greater safety on the road and at their destination.

With over 20 years’ engineering experience, Rosmia is the UK’s longest-serving VB Air Suspension Premium Dealer, comprising a team of fully accredited installers who work with both competence and care.