Porsche 911 991 GT3 RS

Date of unveil by Porsche AG: 991.1 March 3, 2015, 991.2 2018, 991.2 February 21, 2018
Premiere: 991.1 March 3, 2015, 991.2 March 6, 2018, both at the Geneva Motor Show (Salon International de l'Auto et accessoires) press day
World market launch: 991.1 May 2015, 991.2 April 2018

Porsche 911 991.1 GT3 RS
991.1 GT3 RS © Porsche
Porsche 911 991.2 GT3 RS (facelift) in Lizard Green
991.2 GT3 RS © Porsche

Technical specification and comparison

Modification kW lb-ft Nm Gearbox 60 mph 100 km/h 100 mph 200 km/h mph km/h kg lb W/lb W/kg Nord-
schleife
2018 911 991.2 GT3 RS 4.0 383 346 470 PDK 7-speed 3.1 sec. 3.2 sec. 6.9 sec. 194 312 1430 3153 121 268 6:56,4
Michelin Cup 2 R
2015 911 991.1 GT3 RS 4.0 368 338 460 PDK 7-speed 3.2 sec. 3.3 sec. 7.1 sec. 10.9 sec. 193 310 1420 3130 118 259 7:20
Michelin Cup 2
2017 911 991.2 GT3 4.0 368 338 460 PDK 7-speed 3.2 sec. 3.4 sec. 7.3 sec. 11.0 sec. 198 318 1430 3153 117 257 7:12.7
not stock
manual 6-speed 3.8 sec. 3.9 sec. 7.6 sec. 11.4 sec. 199 320 1413 3115 118 260
2013 911 991.1 GT3 3.8 350 324 440 PDK 7-speed 3.3 sec. 3.5 sec. 7.5 sec. 11.4 sec. 196 315 1430 3153 111 245 7:25
2011 911 997 GT3 RS 4.0 368 338 460 manual 6-speed 3.8 sec. 3.9 sec. 11.9 sec. 193 310 1360 2998 123 271 7:27

The RS has been mostly a cosmetic evolution of the non-RS GT3 already since the 996 generation and that is the case also with the 991 GT3 RS 4.0. The purpose of the front fender air vents is to give more downforce to the front axle, but no such vents have been used on the 991 GT3 Cup or RSR, so they are probably more show than go. The side air openings (with their initial purpose of cooling the intercoolers in the turbo-engined car) are used for the intake air. For its 1.4" / 36 mm wider body, wider track (+50 mm front/+30 mm rear), larger wheels (0.5" wider front and rear, 1" larger diameter at rear) and standard roll cage, the RS has only slightly more power to compensate all that. The gear ratios of the RS have been chosen more for the race track use instead of top speed and that is the reason the RS accelerates better than the standard GT3. The gear ratios and less aerodynamic body mean the top speed of the RS is slower than that of the regular GT3 with less power.

The wheels and tyres measure exactly the same as on the 918 Spyder: fronts are 9.5x20" with 265/35 tyres and rears 12.5x21" with 325/30 tyres. Such a selection for the wheels for the RS is not for its benefit as all Porsche racing cars use 18" wheels to keep the weight down and have the best braking performance. The front lid, front wings and rear lid are made of CFRP (carbon fibre reinforced plastic) and the roof is constructed using magnesium.

At the beginning of time 'RS' standed for 'Rennsport' which means 'racing' in German. The 'RS' in the Porsche name used to mean it was a street legal racing car. Think of a 991 GT3 Cup with minimal equipment to make it street legal. That is not the case with the 991 GT3 RS. Like the 991 Turbo and the 991 GT3, the 'RS' is full of stuff that is left out of real racing cars.

Comparison 991 GT3 Cup vs. 991 GT3 RS

991 GT3 Cup 991 GT3 RS
Gearbox 6-speed sequential 7-speed PDK
Brake discs front / rear 380 mm / 380 mm 380 mm / 380 mm
Wheels, front 10.5x18 9.5x20
Wheels, rear 12.0x18 12.5x21
Rear-wheel-steering No Standard
Porsche Torque Vectoring No Standard
PASM electronic damping control No Standard
Fuel tank 100 L 64 L
Weight 1175 kg / 2590 lb 1420 kg / 3130 lb

Conclusion: the 991 GT3 RS is an absolutely amazing car, but it is not what a street legal 991 GT3 Cup could be.


991.1 GT3 RS


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Lava Orange and Ultraviolet were optional special colors for the 991.1 GT3 RS. The standard colors were white and GT-silver.© Porsche
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The side openings of the 991 Turbo are not understandable on this car, but the rest of the car looks just superb © Porsche
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Visually the front wing design is a masterpiece, but debris could find its flypath through it © James Herne / Stuttcars.com
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Porsche Drive rental car © James Herne / Stuttcars.com
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Without radio and speakers, like an RS should be© Porsche
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Pit Speed button © Porsche
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This GT3 RS is equipped with Bose sound system - which market offered that? Maybe China...© Porsche
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918 Spyder one-piece bucket seat with electrical height adjustment, adaptive sports seat and foldable bucket seat © Porsche
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The optional lithium-ion battery saves a whopping 13.5 kg/30 lb and costs a whopping 1% of the RS price© Porsche
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4-litre flat-6 © Porsche
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Wrapped for overseas transport © Margus Holland / Stuttcars.com
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2016 September: RingTaxi advertising near Nürburgring © James Herne / Stuttcars.com

Lego-look wrap

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Porsche 911 991 GT3 RS real car in Lego-look wrap
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Porsche 911 991 GT3 RS real car in Lego-look wrap
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Porsche 911 991 GT3 RS real car in Lego-look wrap
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Porsche 911 991 GT3 RS real car in Lego-look wrap
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Porsche 911 991 GT3 RS real car in Lego-look wrap
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Porsche 911 991 GT3 RS real car in Lego-look wrap
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Porsche 911 991 GT3 RS real car in Lego-look wrap
As can be seen, the car is silver under the wrap © Porsche
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Porsche 911 991 GT3 RS real car in Lego-look wrap
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Porsche 911 991 GT3 RS real car in Lego-look wrap
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Porsche 911 991 GT3 RS real car in Lego-look wrap
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2018 facelift

Although expected, the engine size was not increased for the facelift model - mostly because of technical limits and maybe also because of the CO2 emissions. Maximum engine speed was rised from 8800 to 9000 rpm and power from 368 to 383 kW. Its wide and sort-of-troubled exterior design means in top speed it cannot beat the slicker and more aerodynamic non-RS version, not even the pre-facelift non-RS GT3 3.8.

The optional Weissach package is more of an optical package than a racing package. While the Clubsport package comes with steel roll cage that can be extended at the front for motorsport use, the lightweight titanium roll cage in the Weissach package is not approved for racing, its use is limited to track days. But that's the purpose of the GT3 RS. The Weissach pack includes additional carbon components for the chassis, interior and exterior, as well as optional magnesium wheels from 918 Spyder.

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Porsche 911 991.2 GT3 RS
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Porsche 911 991.2 GT3 RS Weissach, Racing Yellow
Racing Yellow, PCCB Porsche Ceramic Composite Brakes with yellow callipers, black wheels, Weissach design package© Porsche
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Porsche 911 991.2 GT3 RS, Guards Red (Indischrot)
Guards Red with red brake callipers (standard) and black wheels© Porsche
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Porsche 911 991.2 GT3 RS with XGS wheel option
Lizard Green © Porsche
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Porsche 911 991.2 GT3 RS XGS wheel option
Option XGS: black wheels with Lizard Green trim (other trim colors not available)© Porsche
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Porsche 911 991.2 GT3 RS Weissach roof
With the Weissach package the roof panel is of carbon fibre reinforced plastic instead of magnesium© Porsche
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Porsche 911 991.2 GT3 RS inside the trailer
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Porsche 911 991.2 GT3 RS in Lizard Green
GT3 RS side lettering is back, newer door handles (and because of that, new door shells), GT2 RS side air scoops, new rear bumper and naturally the 991.2 rear lamps © Porsche
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Porsche 911 991.2 GT3 RS tyre change in the garage
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Porsche 911 991.2 GT3 RS central locking wheels and tool
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Porsche 911 991.2 GT3 RS with racing driver
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Porsche 911 991.2 GT3 RS in Crayon
Body painted in Crayon and wheels painted in Platinum © Porsche
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Porsche 911 991.2 GT3 RS on ice
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Porsche 911 991.2 GT3 RS in the dark
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Porsche 911 991.2 GT3 RS in Miami Blue
Body painted in Miami Blue and wheels painted in silver © Porsche
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Porsche 911 991.2 GT3 RS in White
Body painted in white (most natural color for racing cars), with golden painted wheels (standard) © Porsche
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Porsche 911 991.2 GT3 RS Lizard Green
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Porsche 911 991.2 GT3 RS paint to sample orange
Paint to sample orange © Porsche
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Porsche 911 991.2 GT3 RS roll cage
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Porsche 911 991.2 GT3 RS rear view
Looks great, as always © Porsche
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Porsche 911 991.2 GT3 RS top view incl. Weissach version
Front lid shows the NACA ducts from the GT2 RS. The left car is painted in beautiful GT Silver. Weissach version (on the right) is most stylish in black as then the carbon finish doesn't scream contrast. © Porsche
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Porsche 911 991.2 GT3 RS brake lamps in the dark
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Porsche 911 991.2 GT3 RS
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Porsche 911 991.2 GT3 RS
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Porsche 911 991.2 GT3 RS in the garage
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Porsche 911 991.2 GT3 RS side air scoop
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Porsche 911 991 RS front fender vents
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Porsche 911 991.2 GT3 RS
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Porsche 911 991.2 GT3 RS Weissach with magnesium wheels
Magnesium wheels from the 918 Spyder Weissach package are optionally available for the GT3 RS with Weissach package, but not included in the package © Porsche
Walter Röhrl with Porsche 911 991.2 GT3 RS on ice and snow
Walter Röhrl in Finland© Porsche
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Porsche 911 991.2 GT3 RS bucket seats
Clubsport package includes roll-over bar, a fire extinguisher, preparation for a battery disconnect switch and a six-point safety belt © Porsche
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Porsche 911 991.2 GT3 RS green interior
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Porsche 911 991.2 GT3 RS black interior
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Porsche 911 991.2 GT3 RS dashboard, instruments
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Porsche 911 991.2 GT3 RS Weissach carbon steering wheel
Carbon fibre steering wheel is part of the Weissach package © Porsche
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Porsche 911 991.2 GT3 RS without AC
Option 574 deletes the air conditioning system, just the heater is left as can be seen on the photo (why does the right switch read TEMP we don't know - 3D rendering mistake?) © Porsche
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Porsche 911 991.2 GT3 RS without Clubsport package
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Porsche 911 991.2 GT3 RS Weissach roll cage
The titanium roll cage of the Weissach package is a lightweight unit© Porsche
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Porsche 911 991.2 GT3 RS roll cage
The steel roll cage can be extended with a front part from Porsche Motorsport making it racing-approved © Porsche

Nürburgring Nordschleife lap time 6:56.4

With its soon-to-be-launched Pilot Sport Cup 2 R tyres Michelin proved that even the already best street legal tyres can be enhanced further. On April 16, 2018, the 383 kW 991.2 GT3 RS fitted with Weissach package, magnesium wheels, Cup 2 R tyres and driver Kevin Estré managed to lap the Nordschleife in 6:56.4. Remember, the 652 kW 918 Spyder has lapped the Nordschleife in 6:57. The result of the 991.2 GT3 RS sounds unrealistic compared to the 7:20 lap of the 991.1 GT3 RS (which has just 15 kW less power), to the 918 Spyder or the 515 kW 991 GT2 RS that is just 9 seconds faster on this 12.9 mile/20.8 km ring.

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2018 Porsche 911 991.2 GT3 RS at Nürburgring Nordschleife, Mark Webber
Mark Webber checking what is going on © Porsche
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2018 Porsche 911 991.2 GT3 RS at Nürburgring Nordschleife
This is a promotional photo made a day after the 6:56 lap © Porsche
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2018 Porsche 911 991.2 GT3 RS Weissach at Nürburgring Nordschleife
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2018 Porsche 911 991.2 GT3 RS Weissach at Nürburgring Nordschleife
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2018 Porsche 911 991.2 GT3 RS Weissach at Nürburgring Nordschleife
Optional magnesium wheels from 918 Spyder © Porsche
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As can be seen in the end of the video, the downforce setting doesn't allow the car to go over 286 km/h (178 mph).
2018 Porsche 911 991.2 GT3 RS Weissach Nürburgring Nordschleife lap record
2018 April 16, Nürburgring Nordschleife, 991.2 GT3 RS Weissach, Porsche GT model line director Andreas Preuninger, Porsche Motorsport director Eugen Oberkamm and driver Kevin Estré who achieved the 6:56,4 lap time. Conditions: ambient temperature 14 °C/57 °F, track temperature 18 °C/64 °F. © Porsche
Andreas Preuninger, Kevin Estre, 2018
Andreas Preuninger, Kevin Estré© Porsche
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Drivers Kevin Estré and Lars Kern both managed to lap under 7 minutes. Kern has earlier set the Nordschleife street car lap record with the 991 GT2 RS (6:47). © Porsche

Mark Webber at the Nürburgring GP track


Considering the CO2 emissions of the normally aspirated 4-litre 9000 rpm engine - which are 200+% over the EU 2020 regulations - the 991.2 GT3 RS is the last of a kind. It remains the most powerful naturally aspirated street legal Porsche of all times.


© James Herne / Stuttcars.com


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