Suspension

Road-car suspension exists for comfort: it lets the wheels follow bumps so the body — and you — glide. F1 suspension has almost nothing to do with comfort. Its real customer is the aerodynamics: the floor from lesson 7 only delivers its huge, cheap downforce if the car's ride height stays within millimetres of its target. The suspension's job is to hold an aerodynamic instrument steady while the road, the fuel load and three tonnes of downforce try to move it.

The visible parts

Look at the wheels of an F1 car: they connect to the body through slim double wishbones, a pushrod (or pullrod) and track rods — all shaped as aerofoil sections, because they live in the airflow the front wing so carefully arranged. The actual springing happens inboard, hidden in the chassis: the pushrod transfers wheel motion through a rocker to torsion bars (springs that twist rather than coil, chosen for compactness) and dampers. On the outside, nothing bounces visibly at all — suspension travel is barely a few centimetres.

Springs and setup

Why not simply weld it solid? Because tyres need load to stay planted on a bumpy surface — a wheel in the air grips nothing — and because kerbs must be survivable. So the setup is a compromise tuned per circuit: stiff enough that downforce compresses the car predictably rather than mushily, soft enough that bumps and kerbs do not launch it. The tools are the same as any race car's, at extreme settings: springs, dampers (adjusted in clicks), anti-roll bars tying left to right, and — crucially for the floor era — heave elements that resist both wheels rising together, which is exactly what downforce does at speed. Squeezing a car with 3000 kg of aero load needs a spring dedicated to that one motion.

Setup is where suspension turns into lap time: a stiffer front anti-roll bar trades turn-in sharpness against mid-corner understeer; a softer rear helps traction out of slow corners but lets the platform move more; every choice shifts load between the four tyres, and lesson 5 taught you why that matters — load sensitivity means the most even car is usually the fastest car.

Banned ideas

Because suspension is really aero control, teams keep inventing systems that control ride height actively — and the rules keep banning them. Williams' computer-controlled active suspension held the car at perfect ride height through 1992–93 and was outlawed for making the cars too fast (and too expensive); hydraulic linked systems and trick heave devices followed the same arc. Today's rules force suspension to be purely mechanical and reactive. The full story of the car that steered this history is one of the site's best: