Control Arms and Wishbones

Make a Wish: Control Arms and Wishbones

The control arm is an important component, responsible for ensuring not only ride comfort but also occupant safety. Mounting kerbs at high speed, poor road surfaces, material fatigue and high forces to which control arms are subjected are all factors that can cause them to fail.

Even just on starting and braking, the control arms are subjected to enormous tensile and compressive forces. In many cases, problems reported by customers such as increased steering wheel play, loud rolling noise, uneven tyre wear or a loss of ride comfort can be attributed to defective control arms or control arm bushes.

When a control arm’s final hour has passed and it’s completely worn out, the only helpful course of action is often to install a new one. Allowing a customer to continue to drive despite having a defective control arm can have expensive consequences and can pose a threat to safety – the erratic and delayed steering movements make the journey increasingly difficult and not only reduce the enjoyment of driving, but also the safety of the vehicle’s occupants. Furthermore, defects on control arms that aren’t repaired can cause damage to other suspension and steering components in the long term. Other parts of the axle, for instance, suffer as a result of the defective control arms, as the forces and movements then need to be compensated for by other components which are not designed for this function.

It is imperative to perform an axle alignment after replacing the control arms due to the fact that these have such a considerable influence on the car’s handling. Doing so ensures that they form one precisely balanced unit together with the struts. Axles that are not aligned or are incorrectly adjusted can lead to both a deterioration in handling and worn-out control arms.

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