The radius rod is an important component because its purpose is to control wheel motion from left to right. It is linked on the end of the axle, and the other to the chassis of the vehicle.
Radius arm operationThe arm is designed to prevent the wheel from moving absurdly in one direction by restricting the movement range. They also should not add any extra weight to the vehicle since they are composed of lightweight materials. This allows the radius rod to function efficiently without obstructing the job of other parts. The radius rod is usually placed ahead of the wheel, they are in that position to resist dive when braking or when the wheel goes over a bump under acceleration.
Issues with a faulty radius armA properly operating radius arm produces great drivability as well as off-road capabilities, but a faulty radius arm can cause the car to brake dive or have uncontrollable movement.