The aerodynamic development of the new R8 was particularly focused on one parameter that plays a predominant role in motorsport: downforce, the force that presses the car down onto the road and enables high speeds through curves. Here, the Audi R8 V10 plus achieves the pinnacle of performance. At speed, the car can generate up to 140 kg of downforce, of which 100 kg is over the rear axle – which is a requirement for the 330 km/h maximum speed that the top version can reach.
The rear spoiler has also been designed to achieve optimal downforce. On the R8 V10 plus, the spoiler is implemented as a fixed wing, its profile derived from Audi’s DTM race cars. The wing works together with the large diffuser on the underbody to create a trailing edge that generates as little turbulence as possible.
The diffuser is located at the height of the rear axle. It takes accelerated air from the underbody and brings it back down to the speed of the ambient air without excessive turbulence. This suction effect lets the air flow faster, heightening downforce. Two venturi spoilers guide the high-speed air into the diffuser and nearly double its effect. Within the diffuser, longitudinal ribs channel the airflow so that it does not concentrate in the middle.