There are many options of suspension types used on race and daily vehicles. Depending on the type of racing (for race cars), the road surface and evolution of the vehicles, the suspension is designed to accommodate multiple requirements. Each suspension type has its advantages and disadvantages—one will give you a comfortable journey, another one will provide you with excellent feeling of a car.

Let’s discuss what is the suspension in the car for:

  • It provides a way to keep all the vehicle’s tires in contact with an uneven surface.
  • It provide a stable platform from to control the vehicle
  • It provide a way to isolate the chassis and driver from the shocking jolts from the tires going over uneven surface.
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The suspension on a competition car has the same basic function as a road car, which is to support the body of the vehicle. However, the requirements which are placed on race suspension systems and the individual components escalate much higher than that. In short – suspension in the race car has two main roles. First is to control the impacts coming from the kerbs and bumps on the track, and the second is to control the weight transfer of the car laterally and longitudinally. All of that is to improve cornering ability and to ensure the maximum possible contact between the tyre and the track surface – which at the end results in increasing grip level. The more grip you have, the more speed you can carry through the corners – that leads to better lap times.

But! Finding the best performance isn’t a case of a one size fits all. There are couple components that make up a suspension on the car, and each of them have they own task. The key is to find the optimal sets that suits best the car and the track.

Anti-roll bars

Also known as sway bars, reduce the body roll of a car, increasing chassis rigidity, ensuring greater driving accuracy.

Bushes

Over time, standard rubber bushes start to deteriorate, causing some play and affecting the suspension geometry, resulting in poor car handling. You can use polyurethane bushes which are much more resistant to wear, they can retain their strength for longer periods of time, providing better handling for longer amount of time

Dampers and Springs

This is where you will find the largest amount of available adjustment as well as the greatest potential for performance improvements in terms of the way the car drives and your lap times.

There are a couple of ways that you can go down when looking to upgrade these items, one is to go for a vehicle specific suspension kit – also called coilover kit. These include the dampers and springs that will suit your model of a car. This is a great solution if you are converting a standard road car into a race/trackday car as you can unlock various adjustment options to tune your suspension including ride height, bump and rebound. Lowering the car lowers the centre of gravity. Bump and rebound changes the stiffness and reacting to damper movement.

This is the end, I hope that the above content brightened the role and the essence of the suspension in your car. If you are looking for help in this or another matter while building your car, fell free to contact our Exp Racing Team.