Here’s How the Aero Works on the Porsche 911 GT3 RS

Here's How the Aero Works on the Porsche 911 GT3 RS

Porsche 911 GT3 RS

Are you a car enthusiast who revels in the pursuit of speed and performance? If so, then you’re in for a treat because we’re about to dive deep into the fascinating world of aerodynamics, specifically as it applies to the Porsche 911 GT3 RS. Buckle up, as this road-legal track monster is a masterclass in airflow management and drag reduction. In fact, it generates more downforce than you might ever expect. Let’s peel back the layers and uncover the secrets behind this aero marvel.

Mastering the Art of Downforce

Picture this: You’re behind the wheel of a Porsche 911 GT3 RS, a machine that’s been engineered to slice through the air like a hot knife through butter. To appreciate its aerodynamic prowess, you must understand the figures: 409kg of downforce at 124mph and a whopping 860kg at 177mph. Those numbers are staggering and spell out a resounding victory in the battle for aerodynamic supremacy.

But where does it all begin? Oddly enough, it starts under the hood. In most 911s, there’s a cargo bay, but in the Porsche 911 GT3 RS, that space is dedicated to a radiator. Porsche adopted this approach from its race cars, such as the RSR and GT3 R, to make room for aerodynamic elements.

Active Aero Magic

The front of the Porsche 911 GT3 RS is where the magic unfolds. Small light bars, once housing radiators, now give way to an active aero system known as PAA (Porsche Active Aero). This system incorporates moveable flaps leading into the front wheels, which can pivot over 80 degrees in just 0.3 seconds to deliver extra downforce. It’s like having hidden wings that deploy when you need them most.

Additionally, the suspension arms are no ordinary arms – they’re wing-profiled. At high speeds, they add another 40kg of downforce, securing the Porsche 911 GT3 RS’s grip on the road.

Evacuating Air Pressure

More air rushing into the front wheel arches naturally leads to pressure build-up. To address this, Porsche enlarged the vents to evacuate excess air efficiently. They also reengineered the entire door area, cutting it behind the tire. A vertical deflector was added to direct air leaving the wheel arch down the side of the car, minimizing turbulence. A similar deflector can be found behind the rear wheels, further smoothing the airflow’s exit.

Underbody Aerodynamics

Beneath the Porsche 911 GT3 RS, you’ll find a symphony of vents and flicks. They serve the crucial function of guiding airflow underneath the car, optimizing brake cooling and reducing underbody pressure. This undercarriage design enhances stability and adds to the overall downforce package.

Bonnet Matters

Hot air generated by the radiator rises through the mesh, but the vanes within the mesh are designed to twist and direct the hot air sideways, rather than up and over the bonnet. This ensures that the engine receives cool air for optimal performance. You’ll also notice a subtle bar on the roof, preventing hot air from mixing with the engine’s much-needed cool intake.

Winged Perfection

The Porsche 911 GT3 RS boasts a rear wing that might defy your expectations. It’s a swan-neck wing, meaning it dangles from its supports rather than sitting on top of them. This design maximizes downforce generation by optimizing the wing’s lower surface. In total, the wing area is 40% larger than its predecessor from the 991 generation.

Furthermore, the wing is equipped with an active function: a hydraulic piston for the DRS (Drag Reduction System). Activating this system opens the upper wing element, allowing air to pass through and reducing downforce by 30%. It can be manually operated via a button on the steering wheel or engage automatically under specific conditions, such as exceeding 62mph and using at least 95% throttle.

Rear Diffuser and Beyond

The rear diffuser, while similar to the GT3, plays its part in the GT3 RS’s aerodynamics. Given the 911’s rear-engine configuration, it can’t feature an extensive diffuser to generate downforce from negative pressure. This raises an intriguing question: Could a mid-engine 911, like the RSR racer, be the next step for Porsche’s pursuit of even greater downforce?

Sticking to the Tarmac

With all these elements working in unison, the Porsche 911 GT3 RS is the epitome of staying glued to the tarmac, no matter the circumstances. It’s a machine built to conquer the road and the track, with aerodynamics playing a pivotal role in its performance. Just look at it effortlessly taking on GotlandRing’s jump at 106mph – a sight to behold, demonstrating the sheer power of aerodynamics.

In the world of high-performance vehicles, the GT3 RS stands as a testament to engineering excellence. It’s not just a car; it’s an aerodynamic masterpiece in motion. So, the next time you see this road-legal track star in action, remember the unseen forces of aerodynamics at play, keeping it firmly planted to the ground, and making it a true marvel of modern engineering.


The Porsche 911 GT3 RS isn’t just a car; it’s a symphony of aerodynamics, working in harmony to provide incredible downforce, unmatched grip, and an exhilarating driving experience. It’s proof that when you’re intent on building a road-legal track car, aerodynamics is your most potent weapon, and the GT3 RS is the ultimate example of how to wield it to perfection. So, the next time you see one of these beasts roaring down the road, you’ll have a newfound appreciation for the invisible forces that make it such a formidable machine.

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