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2020 NEXT GENERATION 992 SPY PICS & RELEASE

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Old 03-26-2018, 11:13 PM
  #1591  
chuck911
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I been saying for at least 6 months now, more like a year, ever since I saw the first spy shots in which this was OBVIOUS to me, that they are 21" wheels in back. Its the reason for the oddball looking mismatched wheels on all the mules. Having proven its worth on the GT cars its the logical next step. And like I said, it was OBVIOUS you could see the things are fricken huge, every single photo. But no. Can't be. Until finally there's a close-up of a tire with 21 on it. And now its like some big discovery. RL. Gotta love it.
Old 03-27-2018, 07:25 AM
  #1592  
JMartinni
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Originally Posted by chuck911
I been saying for at least 6 months now, more like a year, ever since I saw the first spy shots in which this was OBVIOUS to me, that they are 21" wheels in back. Its the reason for the oddball looking mismatched wheels on all the mules. Having proven its worth on the GT cars its the logical next step. And like I said, it was OBVIOUS you could see the things are fricken huge, every single photo. But no. Can't be. Until finally there's a close-up of a tire with 21 on it. And now its like some big discovery. RL. Gotta love it.
The 991 RS models have 21" at the rear and they're not "fricken huge" cars.
Old 03-29-2018, 10:03 AM
  #1593  
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Originally Posted by JMartinni
The 991 RS models have 21" at the rear and they're not "fricken huge" cars.
The bigger problem is you can't get a good selection of tires and wheels that fit both brakes and RAS - the consequence is they are literally tire limited. The benefit of the wheel parallel extended contact patch is all for nought.
Old 03-29-2018, 10:04 AM
  #1594  
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I was hoping that the 20/21" wheel mismatch front to back are just something they are putting on the mule to throw off the look of the car. Hoping they stick with 20" all around. What would be the performance advantage of a 21" wheel ?
Old 03-29-2018, 10:06 AM
  #1595  
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Originally Posted by DMDSpag
I was hoping that the 20/21" wheel mismatch front to back are just something they are putting on the mule to throw off the look of the car. Hoping they stick with 20" all around. What would be the performance advantage of a 21" wheel ?
longitudinal extension of the contact patch
Old 03-29-2018, 10:41 AM
  #1596  
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Originally Posted by RRDnA
longitudinal extension of the contact patch
Seems that would be something that has limitations up to a certain degree
Old 03-29-2018, 06:06 PM
  #1597  
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Originally Posted by RRDnA
longitudinal extension of the contact patch
No, that would be the benefit of a larger rolling diameter. They could keep a 20 on all four and just use a taller tire on the rears. The extra sidewall deformation would also favorably affect traction.
Old 03-29-2018, 10:40 PM
  #1598  
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Originally Posted by Argon_
No, that would be the benefit of a larger rolling diameter. They could keep a 20 on all four and just use a taller tire on the rears. The extra sidewall deformation would also favorably affect traction.
Yep thats what you get with a 325 width tire and 21" wheel and its possible to pull 1.5 to 1.6G (lateral and lineal) on MPSC2 - you do not want too much deformation on the sidewall during high speed cornering (snap break of grip and potentially rolled side wall).
Old 03-30-2018, 04:03 AM
  #1599  
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Originally Posted by sdl2112
I've see it mentioned but I don't know if there has been confirmation of using 21" wheels. This rear wheel shows they are at least testing them.

I hope they offer a third-world special option with smaller wheels for San Fran and other areas where 30 profile on a heavily loaded rear wheel is a recipe for a 5-hour+ wait for Porsche roadside assistance to get to you through traffic (based on real-life experience)
Old 03-30-2018, 06:26 AM
  #1600  
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should be on 325s.
Old 03-30-2018, 08:27 AM
  #1601  
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Originally Posted by RRDnA
should be on 325s.

Out of interest, why do you say that? I have 305s on the 21" 911 Turbo wheels on my current 2017 Panamera 4.
Old 03-30-2018, 10:05 AM
  #1602  
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Originally Posted by Wing Commander
Out of interest, why do you say that? I have 305s on the 21" 911 Turbo wheels on my current 2017 Panamera 4.
Works well on the GT3 RS with RAS.
Old 03-30-2018, 10:14 AM
  #1603  
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Originally Posted by RRDnA
Works well on the GT3 RS with RAS.
Fair enough.
Old 03-30-2018, 12:12 PM
  #1604  
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Originally Posted by RRDnA
Yep thats what you get with a 325 width tire and 21" wheel and its possible to pull 1.5 to 1.6G (lateral and lineal) on MPSC2 - you do not want too much deformation on the sidewall during high speed cornering (snap break of grip and potentially rolled side wall).


Of course they could just run a taller sidewall on a 20. Cup cars do the same. Square wheel diameter, rolling diameter staggered by sidewall height.
Old 03-30-2018, 03:38 PM
  #1605  
chuck911
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Originally Posted by RRDnA
Works well on the GT3 RS with RAS.
Right. Except that RAS is a completely separate subject. There's a YouTube video somewhere with AP talking about all the cool tech they put into the RS and details all the advantages of the larger wheel.
A larger wheel increases the tire patch. I believe AP said something like 18%. Without increasing tire width. Which translates to greater stability and better wet performance.


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