What is Pull-rod suspension?

Pull-rod suspension and push-rod suspension refer to a specialised type of automotive suspension system which is largely based on a double-wishbone system, incorporating elements of the commonly used MacPherson strut.

In cars, suspension refers to the system by which the vehicle maintains contact between all of its wheels and the ground. This is commonly achieved via use of dampers and springs, providing downward forces on the wheels to counteract impact shocks. However, in push-rod suspension systems, this strut is mounted across the chassis, parallel to the ground, as opposed to the perpendicular system commonly used. Push-rod suspension systems therefore allow essential components to be moved out of direct air flow, closer to the centre of gravity, and allow the centre of gravity to be lowered, thereby creating a more efficient distribution of weight and management of body roll.

As a result, push-rod suspension systems can provide a unique avenue for performance, albeit at the cost of everyday drivability, practicality and comfort. Because of this, push-rod suspension systems tend to see most widespread use in non-road based cars, being specialised instead for formula racing leagues, especially Formula One, but rarely are seen in production cars.