First check out the 911 991 GT3 non-RS
Porsche 911 991 GT3 RSDate of unveil by Porsche AG: March 3, 2015
Premiere: March 3, 2015 Geneva Motor Show (Salon International de l'Auto et accessoires) press day
World market launch: May 2015
Technical specification and comparison
|Modification||Gearbox||kW||lb-ft||Nm||60 mph||100 km/h||160 km/h||200 km/h||mph||km/h||kg||lb||W/lb||W/kg||Nord-
|2015 911 991 GT3 RS 4.0||PDK 7-speed||368||338||460||3.2 sec.||3.3 sec.||7.1 sec.||10.9 sec.||193||310||1420||3130||118||259||7:20|
|2013 911 991 GT3 3.8||PDK 7-speed||350||324||440||3.3 sec.||3.5 sec.||7.5 sec.||11.4 sec.||196||315||1430||3153||111||245||7:30|
|2011 911 997 GT3 RS 4.0||manual 6-speed||368||338||460||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 of the 991 Turbo (with their initial purpose of cooling the intercoolers) 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 18 kW more power to compensate on 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 3 mph / 5 km/h 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|
|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|
In conclusion the 991 GT3 RS is an absolutely amazing car, but it is not what a street legal 991 GT3 Cup could be.
© James Herne / Stuttcars.com
PDF 2015/03 911 GT3 RS In German/Deutsch (11 MB)