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AMG GTS or 991 TTS/TT ?

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Old 09-21-2017, 11:39 PM
  #31  
ipse dixit
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Originally Posted by oceancarrera
All of them, the C7, 991, 488, 720 etc all are close to mid-engined to one extent or another. I believe 'torque' is the true measure that gets you around a track faster. That means when it comes on apposed to having it when the cams kick in or when the turbos are at speed.
I think that's why the 1LE does so well (plus monster size tires) around that track. It's nose heavy, heavy in general, but that 'torque grunt' is what makes the car a star.
Mercedes has more cylinders, liters than the 991 so the torque is almost always there.
The 991's are superior in ride comfort. Those sticky tires the others are using make allot of noise. God forbid they are runflats tires...the ride/noise sucks.
The 991's are superior for all around driving on public roads. If Porsche feels like pushing all the competitors aside only they know how to do it best.
No, downforce is.

Certeris Paribus, of course.
Old 09-22-2017, 12:43 AM
  #32  
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Originally Posted by ipse dixit
No, downforce is.

Certeris Paribus, of course.
Yes, that drag race in the above video proves my point.

2016 Tesla Model S P90D

691 hp 713 lb-ft TORQUE

Won the race, no real downforce, more than a thousand pounds heavier
than the competition.
As the late Carroll Shelby once said 'horsepower sells cars, torque wins races'

Pompus Prostateus, of course
Old 09-22-2017, 12:51 AM
  #33  
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Originally Posted by oceancarrera
Yes, that drag race in the above video proves my point.

2016 Tesla Model S P90D

691 hp 713 lb-ft TORQUE

Won the race, no real downforce, more than a thousand pounds heavier
than the competition.
As the late Carroll Shelby once said 'horsepower sells cars, torque wins races'


Yup!! Same reason my old truck ran 10's at almost 130 MPH weighing 7100 lbs. shaped like a brick!!!

1700 Ft. Lbs to the ground is Amazing Stuff!!


Old 09-22-2017, 01:00 AM
  #34  
ipse dixit
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Originally Posted by oceancarrera
All of them, the C7, 991, 488, 720 etc all are close to mid-engined to one extent or another. I believe 'torque' is the true measure that gets you around a track faster. That means when it comes on apposed to having it when the cams kick in or when the turbos are at speed.
I think that's why the 1LE does so well (plus monster size tires) around that track. It's nose heavy, heavy in general, but that 'torque grunt' is what makes the car a star.
Mercedes has more cylinders, liters than the 991 so the torque is almost always there.
The 991's are superior in ride comfort. Those sticky tires the others are using make allot of noise. God forbid they are runflats tires...the ride/noise sucks.
The 991's are superior for all around driving on public roads. If Porsche feels like pushing all the competitors aside only they know how to do it best.
Originally Posted by ipse dixit
No, downforce is.

Certeris Paribus, of course.
Originally Posted by oceancarrera
Yes, that drag race in the above video proves my point.

2016 Tesla Model S P90D

691 hp 713 lb-ft TORQUE

Won the race, no real downforce, more than a thousand pounds heavier
than the competition.
As the late Carroll Shelby once said 'horsepower sells cars, torque wins races'

Pompus Prostateus, of course
Perhaps I misunderstood you, but I thought you were talking about "around a track" as opposed to straight line acceleration in a drag race.

If the latter, yes, then torque is a more significant variable.

If the former, I stand by what I said.
Old 09-22-2017, 01:01 AM
  #35  
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Originally Posted by oceancarrera
As the late Carroll Shelby once said 'horsepower sells cars, torque wins races'
Interesting.

I wonder what the Formula 1 engineers have to say?

A ~2007 2.4 litter V8 F1 engine only made about 180 ft-lbs of torque. Yet, do you not believe that any car in that drag race wouldn't have won if equipped with that engine and a gearbox with appropriate gearing?

Simple aphorisms are fun, but like many things in life the truth is more complicated.
Old 09-22-2017, 08:42 AM
  #36  
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I don't know what to think now. I just was trying to figure why the AMG GT-r did so well on the track.
At Nascar down force is everything on large ovals...small ones it's different.
I'm not sure now what to think. Oh well back to the drawing board.
Old 09-22-2017, 09:04 AM
  #37  
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Originally Posted by Odo3
The Turbo S is the best all round sports car in the world. Unfortunately it continues to get penalized for being too capable, with limits well beyond the abilities of most journalists. Unlike the Turbo S, most of the other cars in the test are not suitable for a road trip and I'll bet their maintenance bills after track time are expensive. Sure like to see the Turbo S's time with the same tires as the Merc GT R.
991 TTS was running sticker tires then AMG GTR.

GTR MSC2 180 compound vs TTS Pirelli P Zero Corso System 80 compound
Old 09-22-2017, 12:46 PM
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Originally Posted by oceancarrera
I don't know what to think now. I just was trying to figure why the AMG GT-r did so well on the track.
The AMG GT-R:
- has roughly similar power/torque as the TTS
- is roughly 100 pounds lighter
- was equipped with R-compound tires
- has a lot more tire (275/325) that the TTS (245/305)
- looks funny
- will, I suspect, be unlivable-with on real streets

The most-pertinent of those are the fatter far-better tires. Those will be worth 5% (or more) in terms of times on road courses.
Old 09-22-2017, 12:50 PM
  #39  
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Originally Posted by Karl911
991 TTS was running sticker tires then AMG GTR.
"Sticker" tires?

or

"Stickier" tires?

Big difference.

GTR MSC2 180 compound vs TTS Pirelli P Zero Corso System 80 compound
UTQG ratings are not comparable across brands.
Old 09-22-2017, 12:52 PM
  #40  
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Originally Posted by Big Swole
Yup!! Same reason my old truck ran 10's at almost 130 MPH weighing 7100 lbs. shaped like a brick!!!

1700 Ft. Lbs to the ground is Amazing Stuff!!

http://www.youtube.com/watch?v=iXNpgvNsI2k

http://www.youtube.com/watch?v=9sgubqnDa64&t=65s

Okay that is F'ing amazing dude. I love how stock it looks. AWESOME!
Old 09-22-2017, 02:51 PM
  #41  
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Originally Posted by Catorce
Okay that is F'ing amazing dude. I love how stock it looks. AWESOME!
Thank you Sir!! Crazy thing is my truck is considered "slow" by a lot of current Diesel performance standards. BUT it was a true "daily" truck capable of Hurting LOTS of expensive sports car folks feelings!! lol

I Love a "Sleeper"
Old 09-22-2017, 08:20 PM
  #42  
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Originally Posted by Karl911
991 TTS was running sticker tires then AMG GTR.

GTR MSC2 180 compound vs TTS Pirelli P Zero Corso System 80 compound
It's actually the other way around. GT-R runs the special version of MPSC2 tires that were first introduced on Z06 Corvette with Z07 package. They are practically a slick tire barely getting through DOT requirements so that they can be driven to the track (but not back, because even after a couple of sessions the tread is going to be too low to be legal :-) ).





PZero Corsa are just slightly better than regular MPSC2, probably the same.




Thay also last the same or slightly longer than MPSC2 on my GT3 - rears wear faster than MPSC2 but fronts slower, so the total set lasts longer because fronts typically go first.

Tire ratings are odd - for example, Pzero Corsa has the same rating as Trofeo R tires, but Trofeo R have much lower starting tread depth and softer compound, so how can they be equal?
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