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    Supertest GT3 RS

     

    NBR: 7.33  SmileySmileySmiley


    Re: Supertest GT3 RS

    Damn, this is quick.


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    The secret of life is to admire without desiring.


    Re: Supertest GT3 RS

    WOW! 7secs difference between the normal GT3 and RS


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    http://i28.tinypic.com/166k5zo.png


    Re: Supertest GT3 RS

    MKSGR:

     

    NBR: 7.33  SmileySmileySmiley

    Smiley While the NoS laptime is not  a big surprise anymore I'm keen to read the full article - the most interesting information usually is hidden between the lines Smiley

     


    --

    public roads: Porsche 987 S Seal/Cocoa, toll road Smiley : Porsche 997 GT3 Arctic/Black


    Re: Supertest GT3 RS

    What are the performance numbers?


    Re: Supertest GT3 RS

    BiTurbo:

    WOW! 7secs difference between the normal GT3 and RS

     it must be the big wing Smiley


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    Re: Supertest GT3 RS

    Porsche-Jeck:
    the most interesting information usually is hidden between the lines Smiley

     

     

    Exactly what I would like to know. Please share them with us , after you have read the article


    --

     997.2 C2S, PDK, -20mm


    Re: Supertest GT3 RS

    only 1 second slower than CGT, very nice.


    --

    Tim

    2010 997.2 GT3RS, January build;  2008 Cayenne Turbo;  2006 911 Club Coupe #13;  2006 BMW 530xi


    Re: Supertest GT3 RS

    WOW,7 seconds is really a lot.If I remember it as fast as the 997 GT2.


    Re: Supertest GT3 RS

     

    Here are some more numbers:

     

    HHR: 1.09,6

    0-100: 4.1s

    0-200: 12.7s

    200-0: 130.1m (PCCB)

    Test weight: 1417kg

     

    Wet handling number is very bad: 1.36,6 (about 7s slower than regular GT3, they say the tires behave differently... which also explains most of the track performance in the dry Smiley)


    Re: Supertest GT3 RS

    MKSGR: 

    Wet handling number is very bad: 1.36,6 (about 7s slower than regular GT3, they say the tires behave differently... which also explains most of the track performance in the dry Smiley)

    Were they cup N1 s ? Smiley


    --


     

    2009 997 GT2 659PS/827NM DIN


    Re: Supertest GT3 RS

    TB993tt:
    MKSGR: 

    Wet handling number is very bad: 1.36,6 (about 7s slower than regular GT3, they say the tires behave differently... which also explains most of the track performance in the dry Smiley)

    Were they cup N1 s ? Smiley

     Yes Smiley Front tires are a bit wider in case of the GT3 RS (245) compared to the regular GT3 (235).


    Re: Supertest GT3 RS

     Also rear are wider in RS (325)


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    Bye!

    Re: Supertest GT3 RS

    MKSGR:
    TB993tt:
    MKSGR: 

    Wet handling number is very bad: 1.36,6 (about 7s slower than regular GT3, they say the tires behave differently... which also explains most of the track performance in the dry Smiley)

    Were they cup N1 s ? Smiley

     Yes Smiley Front tires are a bit wider in case of the GT3 RS (245) compared to the regular GT3 (235).

    Front wheels are wider too @ 9" - these are the widths I am on and I have those exact same N1 cup+.........hence I was interested in how they behave "differently" ? differently to what ?


    --


     

    2009 997 GT2 659PS/827NM DIN


    Re: Supertest GT3 RS

    TB993tt:
    MKSGR:
    TB993tt:
    MKSGR: 

    Wet handling number is very bad: 1.36,6 (about 7s slower than regular GT3, they say the tires behave differently... which also explains most of the track performance in the dry Smiley)

    Were they cup N1 s ? Smiley

     Yes Smiley Front tires are a bit wider in case of the GT3 RS (245) compared to the regular GT3 (235).

    Front wheels are wider too @ 9" - these are the widths I am on and I have those exact same N1 cup+.........hence I was interested in how they behave "differently" ? differently to what ?

    To the best of my knowledge: Increasing front tire width increases tire contact area and decreases front slip angle. Without a corresponding increase in rear tire width, this will reduce understeer, or increase oversteer.
    In a 4WD car like the Turbo, reducing understeer is a good thing because a 4WD car tends to neutral- or under-steer. I believe one of the European tuners, Cargraphic (?), does this to its Turbo at the last Tuner Grand Prix. They used wider front tire, while keeping rear tire the same as stock.
    In a RWD car like your GT2, the increased oversteer could make the car faster, or slower, or more dangerous ("happy" tail from the oversteer), depending on the GT2's baseline behavior, specific driver, track, situation, etc.
    I would also expect wider front tire (non-driven wheel) to affect max speed negatively. How much, I don't know. Hope this helps, or is actually related to your question!

    >>>>>>>>>>>>>>>>>>>>>>>>>>>
    http://en.wikipedia.org/wiki/Car_handling

    Component Reduce Under-steer Reduce Over-steer
    Weight distribution center of gravity towards rear center of gravity towards front
    Front shock absorber softer stiffer
    Rear shock absorber stiffer softer
    Front sway bar softer stiffer
    Rear sway bar stiffer softer
    Front tire selection1 larger contact area² smaller contact area
    Rear tire selection smaller contact area larger contact area²
    Front wheel rim width or diameter larger² smaller
    Rear wheel rim width or diameter smaller larger²
    Front tire pressure lower pressure increase pressure
    Rear tire pressure increase pressure lower pressure
    Front wheel camber increase negative camber reduce negative camber
    Rear wheel camber reduce negative camber increase negative camber
    Rear spoiler smaller larger
    Front height (because these usually
    affect camber and roll resistance)
    lower front end raise front end
    Rear height raise rear end lower rear end
    Front toe in decrease increase
    Rear toe in decrease increase
    1) Tire contact area can be increased by using wider tires, or tires with fewer grooves in the tread pattern. Of course fewer grooves has the opposite effect in wet weather or other poor road conditions. 2) These also improve road holding, under most conditions.

     

     

     


    --

    Regards,
    Can
    997 Turbo + Bilstein Damptronic "Stage 2" ( Review ) + GIAC ECU Tune ( Fast as a torpedo & reversible to stock - Review ) + Cargraphic Exhaust ( Oh heavenly noise! )


    Re: Supertest GT3 RS

    Can someone with a copy read me off the downforce numbers from the wind tunnel front and rear @200kph - TIA


    --


     

    2009 997 GT2 659PS/827NM DIN


    Re: Supertest GT3 RS

    TB993tt:

    Can someone with a copy read me off the downforce numbers from the wind tunnel front and rear @200kph - TIA

     The downforce numbers are: 11kg (front) and 49kg (rear) Smiley

    CwxA is 0.69


    Re: Supertest GT3 RS

    Thanks Marcus - here are the downforce charts extrapolated for those tested numbers I got the formulae from here:http://www.reverie.ltd.uk/calculate.php

    So I am hoping they are correct - the GT3RS total downforce at its maximum speed 310kph calculates as 144.7kg which is down on what Porsche quote (170kg IIRC ?)  - maybe the formuals are wrong or maybe it is just a variation in the wind tunnel/testing methods ?

     

     


    --
     


     

    2009 997 GT2 659PS/827NM DIN


    Re: Supertest GT3 RS


     


    Re: Supertest GT3 RS

    Targa Tim:

    only 1 second slower than CGT, very nice.

     

    Incredible how performance can improve in only a few short years . Smiley  


    Re: Supertest GT3 RS

    Sport Auto Supertest: 2010 Porsche 911 GT3 RS (results summary)

    Sport-Auto-Supertest_2010-Porsche-911-GT3-RS_Rennteam-summary

    Smiley SmileySmiley


     
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