Clear the stage for an exciting race car: At the same time as the production model, Audi Sport presented the DTM racing version of the Audi RS 5 Coupé at the Geneva Motor Show in 2017. The new RS design language premiered in this model that features numerous modifications required by the regulations as well.
Keyfacts Audi RS 5 DTM
“This is a special day for me and everyone involved in the DTM project,” said Head of Audi Motorsport Dieter Gass at the launch of the Audi RS 5 DTM at the Geneva Motor Show in 2017. “For the first time, we developed a new DTM car in parallel with the production model. This underlines once again how closely motorsport and production work together at Audi.”
“In addition, we’ve improved the components in terms of accuracy of fit once again,” said Gugger. “As far as gap dimensions are concerned, Audi has always stood out from the competition. Still, we’ve made another step that enhances aerodynamic performance.” New as well was the rear wing, which consists of two flaps. To increase the effectiveness of the Drag Reduction System (DRS), the entire wing is no longer lowered but, like in Formula 1, the top flap flattened – which is intended to produce even more overtaking maneuvers.
The objective of the new 2017 regulations was to make the cars more challenging to handle in order to put greater emphasis on the drivers’ performance. Among other things, aerodynamic downforce of the DTM race cars was been reduced. Decisive here on all cars were modified geometries of the specification front splitters, underfloors and rear diffusers. Ride height was increased due to the regulations as well.
That the new Audi RS 5 DTM is faster than its predecessor in spite of these modifications was primarily attributable to two additional changes. In the 2017 season, tyre partner Hankook supplied softer tyres. While allowing faster lap times to be achieved on the one hand they were deliberately designed to significantly degrade after a few laps on the other. At the same time, the four-litre V8 engine of the Audi RS 5 DTM was worked on to deliver more than 500 HP. “You can feel this additional power in the cockpit,” said Jamie Green who in the winter, together with Mattias Ekström, performed the major part of the testing work ahead of the 2017 season.
The base of the engine used in the Audi RS 5 DTM remained unchanged. To achieve the desired power boost, the engineers modified the air intake system and the cooling system. In addition, they made some detailed adjustments to ensure the same reliability as before. After all, a DTM engine has to survive a full season.
Another change resulting from the regulations concerned the suspension, which in 2017 was identical on all DTM cars as well. While this avoided costly further developments, the variety of set-up options remained unchanged.