What is the function of a sway bar in a vehicle’s suspension?

The sway bar, also known as an anti-roll bar, plays a critical role in a vehicle's suspension system by reducing body roll during cornering. When a vehicle turns, the weight shifts to the outside of the turn, causing the body to lean away from the direction of the turn. The sway bar connects the left and right sides of the suspension system, allowing it to distribute the force exerted during a turn evenly across both sides. This helps to keep the vehicle more stable and flat, improving handling and safety by preventing excessive body roll.

This function is particularly important in maintaining traction and control, as reduced body roll can help keep the tires planted on the road, allowing for better steering response and stability at higher speeds. The sway bar thus enhances the overall driving experience by promoting better handling characteristics during both routine driving and more aggressive maneuvers.