In motor vehicle suspension systems, a control arm is a suspension connection between the chassis and the suspension upright or hub that carries the wheel. The basic function of the track control arm is to provide improved road holding and shock absorption.
The component is known as the track control arm. The track control arm has a wishbone or “A” shape on the bottom, which bears most of the impact of the shock. It absorbs the shock and keeps the wheels firmly on the road for a more comfortable ride.
The performance of the track control arm is augmented by the control arm bushings, which are an equally important part of the vehicle's suspension system. These are situated between the control arm and the frame of the vehicle and have the effect of further dampening vibration between the wheels and the frame, cushioning the ride, minimising driving noise and preventing metal from coming into contact with metal.
Signs that the control arm bushings may be failing are handling problems, loose steering and uneven tyre wear. Shaking, thumping or rattling noises may also be evident, especially when turning or braking. Replacement is the only possible option when the track control arm component begins to fail.