GT3 RS vs GT4 RS: the full comparison between two Porsche icons
What happens when you pit two of Stuttgart's finest against each other on the Val de Vienne circuit? In this ground-breaking video, we compare two Porsche RSs that, on paper, look like opposites: the fearsome 992 GT3 RS, a concentrate of technology and precision, and the surprisingly wild 718 Cayman GT4 RS, the first of its kind to receive the RS badge.
In this article, which retraces the video, you'll discover:
- A full breakdown of their respective technical specifications
- The power bench test carried out at Shiftech
- On-track testing in real conditions, with analysis of dynamic behaviour
- Feedback from experienced riders on noise, steering, braking and downforce
- An objective comparison, but not without a hint of bad faith
And because these two Porsches aren't just technical data sheets, we also take you behind the scenes of the preparation (fitting the full PPF on the Cayman), etc...
In short, it's immersive, well-documented, lively and, above all, enlightening content for anyone wavering between these two extreme visions of Porsche sportiness.
GT3 RS or GT4 RS? On paper, on the track, or in the heart? Find out in the article...
Two radical Porsches, but different at heart
On the one hand, there's the 992 GT3 RS, the brand's technological and performance showcase, with an active spoiler, aerodynamic management worthy of competition, and formidable efficiency. On the other hand, the GT4 RS, the first Cayman to adopt the RS badge, has a much more playful character and a DNA focused on pure driving pleasure.
Even before taking to the track, the GT4 RS has received a full PPF from Shiftech to protect it from the aggressions of intensive driving. An essential preparation for regular track use.
Fact sheet: key figures
Here is a table comparing the Porsche 992 GT3 RS and the Porsche 718 Cayman GT4 RS:
| Features | Porsche 992 GT3 RS | Porsche 718 Cayman GT4 RS |
|---|---|---|
| Engine | Flat-6 4.0L atmo | Flat-6 4.0L atmo |
| Engine position | Rear overhang | Centre rear |
| Power (Shiftech dyno) | 510 bhp | 500 bhp |
| Torque | 470 Nm | 420 Nm |
| Wheelbase | 2457 mm | 2482 mm |
| Aerodynamic downforce | 860 kg | 400 to 500 kg |
| Luggage compartments | None | Two boxes |
| Braking | Stable and durable | Less constant (OEM hoses) |
| Claimed weight | Approximately 1450 kg | Approximately 1415 kg |
| Driving pleasure | Extreme precision | Fun and intuitive |
On the track: rail or drift?
GT3 RS: a demonstration of efficiency
On the Val de Vienne circuit, the 992 GT3 RS impresses with its stability, even at high speeds. Braking performance remained constant thanks to exemplary thermal management. The car's downforce is aerodynamic, allowing it to negotiate corners at formidable speeds. Its precise steering and razor-sharp chassis make it an absolute benchmark for demanding racers.
GT4 RS: pleasure above all else
With its mid-mounted engine and more compact chassis, the GT4 RS is more fun and more engaging. The feel of the car rises up in the steering wheel, it's easy to place, and you can play to your limits. Beware, however, of the endurance of the original brakes, which show signs of fatigue after several consecutive laps.
Sound: two radically different experiences
The GT4 RS offers a unique sound experience. The carbon intakes located just behind the driver's ears transform every rev-up into a mechanical symphony. It's raw, visceral, almost brutal.
The GT3 RS, although more discreet on board, is still impressive on the outside. Its engine screams at more than 9,000 rpm, but is more subdued inside thanks to better soundproofing.
Ergonomics, passenger compartment and life on board
The GT3 RS features a modern interface with digital screens, customisable steering wheel controls and full chassis setup management directly from the cockpit. A true road-legal racing car.
The GT4 RS is a sober affair, with its controls reduced to the bare essentials and a rawer ambience, but it's still a pleasure to drive for those looking for an unfiltered experience.
Verdict: which one to choose?
Are you looking for an absolute weapon on the racetrack, capable of setting the fastest lap times and cornering at breakneck speed? Then the 992 GT3 RS is for you.
Do you prefer a more fun, more communicative approach, with a slightly less extreme budget? Then the 718 Cayman GT4 RS is for you. this machine is also ideal for Porsche's debut on the track.
In both cases, we're talking about Porsche RSs: rare, precise machines that leave no one indifferent.
What does the future hold for these vehicles?
The Cayman combustion engine is living its last hours. The next generation could be 100% electric. As for the 911, it's about to go hybrid. This GT3 RS vs GT4 RS comparison is therefore also a tribute to two naturally-aspirated Porsches at the top of their game.
Youtube
The full video with track tests
Learn more
View articles
Similar
