Opel Optimizes Astra TCR Racer Aero Package

In order to be successful in the Touring Car Racer Series, a vehicle has to have excellent aerodynamics and undergo meticulous wind tunnel testing.

Aerodynamic efficiency is the result of a well-balanced ratio of downforce and drag, which is something engineers need to keep in mind when building a car that’s meant to tackle high speed corners as easily as it blasts through main straights.

Opel claims that the reigning “Car of the Year 2016” already has an outstanding drag coefficient of 0.272, which makes it well-suited to serve as the base for a track-oriented car.

Compared to the production model, the TCR has gained 1,950 mm (76 inches) in width, the maximum permitted by the regulations. While the bumpers, fenders and side panels have been modified, it’s the front splitter and the rear wing that help create most of the downforce.

The rear wing needs to be carefully positioned so that it won’t protrude from the roofline. In order to figure out a compromise between drag and downforce, Opel engineers built the front splitter as flat as possible, though steep enough to keep the front axle stable under braking and prevent understeer.

As for gathering sufficient data, the team went to Stuttgart University and used their wind tunnel. “It has a rolling floor and can simulate speeds of up to 250 km/h. That makes it ideal for our purposes”, explained Opel Motorsport exec Dietmar Metrich.

Metrich, understandably, isn’t so keen on revealing specifics when it comes to the data and measurements found during testing.

“I can tell you this much: we feel perfectly prepared thanks to the excellent suitability of the base model. We will only find out where we stand when the cars compete on the race track but that makes the whole thing really exciting!”

PHOTO GALLERY

Audi Could Team Up With BMW And Mercedes On Autonomous Driving Tech

An announcement could come at the Frankfurt Motor Show.

Richard Hammond Celebrates His Mid-Life Crisis With A (….Sponsored) Ford Ranger Raptor

Richard Hammond even shocks his passengers with some off-roading in the Ford Ranger Raptor.

Lamborghini Teases A Mystery Model For Frankfurt, Could Be A Limited Edition Hypercar

The model appears to draw inspiration from the 2017 Terzo Millennio concept.

2020 Chevrolet Bolt To Have Increased Range Of 259 Miles

The model could have an extra 21 miles of range.

Ford Thinks Its Co-Pilot360 Tech Will Silence Backseat Drivers

According to a recent study, 68% of drivers believe backseat driving behavior will go down thanks to semi-autonomous tech.

Tesla Would Like To Enter The Indian Market, If Not For Exorbitant Taxes

The Indian government wants to establish itself as a global manufacturing hub for electric vehicles so, naturally, Elon Musk is keeping an eye on it.

Charlize Theron Goes For A High-Octane Ride In Hyperdrive Traler

Hyperdrive will gather 28 car enthusiasts around the world competing in various challenges.

Lexus’ Upcoming EV Concept Could Preview A Production Model

A new CT could also be in the works for 2021.

This Is Where You Can See The 2020 Corvette Stingray In The Flesh

The 2020 Corvette Stingray starts at a $59,995, with the desirable Z51 pack adding an extra $5,000.

BMW Doesn’t Use Turn Signal, Cuts Off Audi And Causes Crash

Despite causing the crash, the BMW driver left the scene seemingly without any damage.