shawsan

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'.

Streetgear

Reading this bring a smile to my face. Maybe this will slow the depreciation on the 997 Turbo S. Given the fact there are more tuning options the 30 HP advantage of the 991 can easily be reeled in even by a simple exhaust change. It's tough to justify the price bump of the 991 TTS over the 997 TTS.

Streetgear

Think you should also add curb weight specs

997TTS - 3561 991 TTS - 3607 997TTS weighs in 46 LBS. less.

jcnesq

No stats but my 997.1 TT with FVD tune makes me smile!

WaltB

I've driven the 991TTS and was no more impressed with it than I was with my 997 TTS. Of course my tune helps my acceleration figures. I think Porsche should have simply added some power to the 997 TTS for 2014 and instead made a truly phenomenal 2015 991 TTS by adding a 3rd turbo for low RPM boost to totally alleviate current turbo boost lag. That might have justified the higher price for the car and made many of us current 997 TTS drivers actually want one.

Walt

phillipj

Wow .. Really interesting.

I'm sure you all know my views on the 991 TT. I agree that it should have been more exceptional to command that price over the 997TTS.

To all you S owners.. Yee Haa!

ISFtoTurboS

Well, it's got 30 more HP, but it also weighs a little more. Another thing is that it has 20" wheels vs. 19" and bigger wheels/rubber = more rotational mass (and bigger rotors too). Perhaps the 30 additional HP or more than offset by the additional weight and rotating mass?

DJ23

You truly have hit the nail on the head. That's why I didn't pull the trigger on the new 991TTS. My car with the Softronic tune is faster and more powerful than the new Turbo. I just had to hold off until I have something more significant to purchase. Who wants to pay 200,000K for something that is close to what they have now? Will wait 4 years for the new 992TTS.

Jay

flyjets

I drove the 991TTS and I don't feel the same as you guys.

When I purchased my 997TT I didn't want to drop 190K on it but it felt like a better handling and faster car then my stock 997TT.

My thoughts are in 2 years I can pick it up for about 145K and be just as happy but it's faster then the 997TT. A close friend has a highly modified 997TT. His is faster then the new 991TTS but he exceeds the limits of adhesion given the street tires he is running.

Ian

mlambert890

Disclaimer... I LOVE the 997TTS and am here because 997T's are finally starting to creep towards my budget and Im getting itchy. That said, this feels like a rationalization to me (no offense). "Tune" arguments can be said of the 991 also. It may be a *tiny* bit heavier, but 30 HP is enough to offset hundreds of pounds of weight just going by typical power:weight math (so 47 lbs is less weight gain than 30 HP can compensate for)

The first post alluded to it. These tests can't be remotely compared. It's two isolated tests separated by *years*.

If it makes 997TTS owners feel happy to think that somehow made the 991TTS *slower*, then thats cool. It wouldnt add up, though, from a power:weight + updated technology standpoint at all, and I'd be *really* shocked if it ever proves out that way lining up two *fully stock* examples at a strip with two equal enough drivers.

At the end of the day given the budget (meaning *really* the budget, money being no big deal), I can't imagine that anyone would opt out of the 991TTS and go for a used 997TTS instead.

Jackson22

Respectfully, not true. I find the 991 to be very unattractive when compared to a 997....just the way I find a 996 to be unattractive compared to a 993. I have no interest in a 991 and whatever incremental performance gain it has over the 997 is outweighed by the negative impact of its looks, and it's not a question of whether I can afford it.

ljpviper

I agree, i dont like the 991 at all. My buddy bought a base Carrera back in late 12 when i had my 997 base carrera. I was expecting to be wowed, i was not. I drove off happily in my 997.

I hated the steering, dont like the interior and dont like the seating position. I think the 997 series is the best mend of old and new. My current 997 Turbo is a keeper!!!

Jackson22

Yes!!

GatorMD97

Coming from a daily driver standpoint I recently checked out a new 991TTS vs my 997TTS. I consider the 911TTS as the ultimate daily driver supercar (what an oxymoron). I can haul my kids and haul a$$ and I think they got it right with the 991. This is my first Porsche and in my opinion they seem a little behind the times with technological conveniences--I can't bluetooth music in my car without a glitchy $100 add on but a $20K Ford has been able to for years. If you are strictly speaking about performance I would never give up my 997 for a 991; however, for the few added daily driver features I can see myself upgrading in a couple of years after the 30-40% hit. The features I really liked are:

1. Adaptive Cruise Control (I like to take trips in my 997 and when I have my kids I'm not driving in a "spirited" manner).
2. Dual climate zones (my wife has Raynaud's and likes it hot while I like it cold)
3. Ventilated adaptive sport seats (only available on comfort seats for 997 which I hate because of the lack of upper bolsters)
4. A real digital display on the instrument cluster without that 1980's style calculator watch feel.
5. Bluetooth audio streaming!!!
6. Front and rear park assist (rear even has a camera)
7. Front spoiler that is a rubber material and deploys at speed. Seems very forgiving on those steep driveways and speed bumps.
8. Keyless entry and drive.

Forgive me for sounding like a corvette owner but I just wanted to point out what I feel are the features that take the 991 up a notch for those that want to daily drive a supercar.

flyjets

That's my plan no sense to be a Test Pilot on a new model anyway unless your Walter Rohrl.

Witnessed a 991TTs with a ripped corner front spoiler bladder semi deployed guess that lock down feature isn't a smart move.

Ian