Road & Track Acceleration Data suggesting 997TTS outperforms 991TTS
02-23-2014, 09:10 PM
#31
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https://rennlist.com/forums/997-foru...l#post10669513
02-24-2014, 02:03 AM
#32
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Gator MD 97 ,That is wild,your car looks just like my 997 TS I sold to get the 991TS,except my 997 TS had a black interior. I also had a 97 Viper GTS,96 RT 10 and a 2009 Gen 4 Viper..Small world..
02-24-2014, 07:29 PM
#33
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As I’ve said before, acceleration isn’t everything, but a comparison of ‘Road & Track’ results suggests the 997TTS slightly (and I mean slightly) outperforms the 991TTS on acceleration measures.
Ok, not the same day, not the same driver, not the same pavement, but at least the same set of test drivers, by the same data-driven car mag, doing the same kinds of launch control, with an OEM spec. car.
For 0-60: both cars best time = 2.6 seconds
For 0-100: 997TTS = 6.3 seconds; 991TTS = 6.8 seconds
For ¼ mile: 997 TTS = 10.7 seconds; 991TTS = 10.9 seconds
Speeds for ¼ mile: 997 TTS = 128.9 mph; 991 TTS = 124.4mph
Braking 60mph to zero: 997TTS = 107 ft; 991 TTS = 115ft
Braking 80 mph to zero: 997TTS = 185 ft; 991 TTS = 194ft
Nor can one discount the 991TTS data as being a suboptimal, ‘one off’ fluke. The figures reported above are based on the best runs of 60 ‘launches’ recently reported by R&T. For example, many of the 0-60 times were often .2-.3 seconds slower. The same applies to the 997TTS where, Car & Driver and Motor Trend, for example, reported 0-60 times of around 2.7 and 2.8 seconds for the 997TTS.
And for the naysayers, this isn’t just about 0-60 times. The 997TTS shows even more strength for 0-100 and ¼ mile times.
Of course, the 991TTS shows strong advantage on the track due to its rear wheel steering -- that's the 'evolution' Porsche likes to emphasize versus the 'revolution'.
Ok, not the same day, not the same driver, not the same pavement, but at least the same set of test drivers, by the same data-driven car mag, doing the same kinds of launch control, with an OEM spec. car.
For 0-60: both cars best time = 2.6 seconds
For 0-100: 997TTS = 6.3 seconds; 991TTS = 6.8 seconds
For ¼ mile: 997 TTS = 10.7 seconds; 991TTS = 10.9 seconds
Speeds for ¼ mile: 997 TTS = 128.9 mph; 991 TTS = 124.4mph
Braking 60mph to zero: 997TTS = 107 ft; 991 TTS = 115ft
Braking 80 mph to zero: 997TTS = 185 ft; 991 TTS = 194ft
Nor can one discount the 991TTS data as being a suboptimal, ‘one off’ fluke. The figures reported above are based on the best runs of 60 ‘launches’ recently reported by R&T. For example, many of the 0-60 times were often .2-.3 seconds slower. The same applies to the 997TTS where, Car & Driver and Motor Trend, for example, reported 0-60 times of around 2.7 and 2.8 seconds for the 997TTS.
And for the naysayers, this isn’t just about 0-60 times. The 997TTS shows even more strength for 0-100 and ¼ mile times.
Of course, the 991TTS shows strong advantage on the track due to its rear wheel steering -- that's the 'evolution' Porsche likes to emphasize versus the 'revolution'.
http://www.dragtimes.com/compare2.ph...ame=Compare%21
02-25-2014, 03:11 PM
#34
Drifting
Don't want to hijack anymore than I have but here is a link to the post I made not long ago when I bought the car.
https://rennlist.com/forums/997-foru...l#post10669513
https://rennlist.com/forums/997-foru...l#post10669513
Wow Gator I did not see that when you originally bought the car. That is a beauty.. Love the interior.. Awesome..
02-25-2014, 07:31 PM
#35
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The 997 and 991 Turbo S s are very close in the quarter mile,with in 2 tenths going to the 991 TS,that is 1.5 to 2 car lengths at the line..After that point and on any round a round track the 991 will leave the 997 via the extra HP/Extra Boost and 4 wheel steering ..
Remember,any street car that runs a 10 second quarter is a animal..
Remember,any street car that runs a 10 second quarter is a animal..
02-26-2014, 02:15 AM
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Yes, the 991TTS and 997TTS are very close in the quarter mile, but I don't think there are grounds yet to conclude the 991TTS is actually any faster.
If I average quarter mile times for the 997TTS from Road and Track (1), Drag times (2) and Car & Driver (1), the average is 10.73 seconds for the quarter mile and an average top speed of 128.2 mph. In comparison, for the 991TTS, averaging results from Road and Track (1), Drag Times (1 from Bahrain), and Motor Week (1), the average is 10.79 for the quarter mile and 127.1 mph top speed.
Frankly, I`d expect the 991TTS to slightly outperform the 997TTS on 0-60, 0-100 and quarter mile times.. Thus far, however, I`d like to see more convincing evidence, more beef in the bun.
Why the almost identical performance. Could be attributed to a combination of (i) the small -- 45lb-- weight advantage of the 997TTS, (ii) the possible, rotating mass disadvantage of larger wheels and rotors on the 991TTS, and (iii) the similar torque profiles between the two cars with the 6% HP advantage of the 991TTS being more relevant at high end speeds.
As I said when I started this post, I have no illusions about superior performance I`d expect the 991TTS to demonstrate on the track. The rear wheel steering is the clincher in this respect.
If I average quarter mile times for the 997TTS from Road and Track (1), Drag times (2) and Car & Driver (1), the average is 10.73 seconds for the quarter mile and an average top speed of 128.2 mph. In comparison, for the 991TTS, averaging results from Road and Track (1), Drag Times (1 from Bahrain), and Motor Week (1), the average is 10.79 for the quarter mile and 127.1 mph top speed.
Frankly, I`d expect the 991TTS to slightly outperform the 997TTS on 0-60, 0-100 and quarter mile times.. Thus far, however, I`d like to see more convincing evidence, more beef in the bun.
Why the almost identical performance. Could be attributed to a combination of (i) the small -- 45lb-- weight advantage of the 997TTS, (ii) the possible, rotating mass disadvantage of larger wheels and rotors on the 991TTS, and (iii) the similar torque profiles between the two cars with the 6% HP advantage of the 991TTS being more relevant at high end speeds.
As I said when I started this post, I have no illusions about superior performance I`d expect the 991TTS to demonstrate on the track. The rear wheel steering is the clincher in this respect.
02-26-2014, 02:22 AM
#37
IMO, it's unfortunate that the next generation TT-S isn't significantly faster in a straight line. The Corvette Z06 will be at least 100+ HP over the last generation. This incremental improvement is a big reason I have no desire to even test drive the new Turbo S. Maybe they'll make a 991.2 TT-S with 600+ HP.
02-26-2014, 06:04 PM
#38
Drifting
IMO, it's unfortunate that the next generation TT-S isn't significantly faster in a straight line. The Corvette Z06 will be at least 100+ HP over the last generation. This incremental improvement is a big reason I have no desire to even test drive the new Turbo S. Maybe they'll make a 991.2 TT-S with 600+ HP.
02-27-2014, 12:01 AM
#39
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Agreed w/Shawsan,again had a 997 TS for 2 years and now have a 991 TS,they are very close/almost identical in the quarter mile performance.But,the 991 TS is a very improved car in many ways/every way over the 997 TS.I am glad it is because it cost be a lot of $$$$ plus a beautiful 997 TS to get the 991 TS...May be doing the Bump Up again soon to the 918 Spyder.At dealer today and heading to Germany /Factory in May to check them building the 918...
All these new Porsches are Bad ***.....
All these new Porsches are Bad ***.....
03-14-2014, 12:37 AM
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03-14-2014, 02:05 AM
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The Motortrend test data pretty well confirm the points made in my original post that the 997TTS shows slightly -- and I mean slightly -- faster acceleration than the 991TTS -- for quarter mile and final trap speeds. Even the testers at Motortrend can't understand why the 991TTS lags the 997TTS in the quarter mile. It's gotta be the bigger wheels, as they speculate. Their test data do, however, suggest better 60-0mph stopping distance for the 991TTS. I wonder, however, how they got it to stop in 100 feet when the Road and Track test took 115 feet. A question of different tires, perhaps.
03-16-2014, 02:15 PM
#42
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the difference between the two is too close to tell in the seat, only on paper.
reproducing the posted 0-60 times consistantly in either car is a crap shoot anyhow.
reproducing the posted 0-60 times consistantly in either car is a crap shoot anyhow.
07-18-2014, 07:27 PM
#43
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I put 37k miles on a 2012 991C2S before trading it for a CPO 2012 997TTS. IMHO, the 997 body style looks better than the new 991 and the 997 interior is much nicer and sports car like, whereas the 991 interior just looks like a Panamera or Boxster or Cayman or Cayenne or Macan...Sure the 991 may have a little softer ride as well as a few more up to date options over the 997, but so does a Honda Accord. And, I did test drive a 991TTS at a different dealer, but still preferred the look and feel of the 997TTS.
Last edited by parkerfe; 07-18-2014 at 07:42 PM.
07-19-2014, 02:24 AM
#44
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There are a lot of 997 TTS tunes available that take the HP over 600. I have one. So with all this talk about the 991 TTS performance being very close to the 997 TTS have any 991 TTS's been tuned yet and if so what numbers are they seeing?
Walt
Walt
