What is the main function of the control arm in the suspension system?

The main function of the control arm in the suspension system is to allow relative motion between the wheel and the vehicle frame while maintaining wheel alignment. Control arms are crucial components that connect the chassis of the vehicle to the wheel assembly. They serve an essential purpose by enabling vertical movement of the wheels, which helps to absorb shocks from the road, while simultaneously ensuring that the wheels maintain proper alignment with the chassis during this movement. This alignment is vital for stability, handling, and tire wear.

Proper functioning of the control arm allows for smooth handling and steering response, as the wheels can move up and down independently, accommodating road irregularities. By keeping the wheels aligned correctly, control arms also help with tire wear and ensure the vehicle drives in the intended direction, thereby enhancing safety and performance.