The significance of aerodynamics can be seen primarily in the downforce. The search for greater downforce has become the driving factor behind entire Formula 1 teams. The shape of cars is grinded on the computer, in the wind tunnel and on the track, and the wings and wind deflectors are styled just as much as the diffuser on the rear underside of the car. The aim of this precision work is to channel the airflows perfectly and so generate as much downforce as possible, which presses the car down onto the road and permits shorter braking distances and higher cornering speeds. Experts estimate 80% of the car’s grip is generated by the downforce and only 20% by the tyres. But downforce is not everything: the recipe for true success is to find the best compromise between the greatest possible downforce and the lowest possible air resistance. There is no ideal set-up to suit every racetrack, so the true art of the designers is to get closer to the ideal than their competitors for every race. This is not an easy task, with 20 different possible settings for a rear wing and 100 possible settings for a front wing.

The aerodynamics are the most important factor in the design of a Formula 1 car. An air duct panel between the front wheel and the side panel, for instance, can add more speed than two or three extra horsepower. Only those teams with their own wind tunnel can keep up with the extremely fast development in this field. The engineers spend up to 15,000 hours every year at the wind tunnel, and each complex costs about 45 million euros. Modern Formula 1 cars can withstand centrifugal forces of up to 4G without sliding off the track. The art of aerodynamics allows far higher cornering speeds than would be possible without downforce, and so not only ensures a better performance but also even more safety. As a rule of thumb, 35% of the total downforce is generated by the rear wing. However, as it also causes the greatest air resistance, it is the rear wing’s setting that is changed most from race to race.