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View Poll Results: How fast do you think the G82 competition will complete the Nürburgring
7:10s 2 4.35%
7:20s 4 8.70%
7:30s 19 41.30%
7:40s 12 26.09%
7:50s 3 6.52%
Slower than the F8x 6 13.04%
Voters: 46. You may not vote on this poll

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      11-05-2020, 02:57 PM   #23
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Originally Posted by solstice View Post
Cooling problems as in overheating and optimal combustion chamber temperatures for maximum power output are not the same thing. Significant power advantages can be had by cooling improvements within what is regarded as “normal range”.
What I am trying to say is that the S58's cooling improvement is already reflected in the S58's power advantage. It is not "over and above" to help its 'ring time.
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      11-05-2020, 03:08 PM   #24
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Quote:
Originally Posted by CanAutM3 View Post
What I am trying to say is that the S58's cooling improvement is already reflected in the S58's power advantage. It is not "over and above" to help its 'ring time.
I disagree. The paper power gap is the peak power gap under one set of controlled conditions. If one engine fluctuates downwards with larger amplitudes and/or more frequently during a fastest lap the average power advantage is larger than the paper gap.
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      11-05-2020, 03:09 PM   #25
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Originally Posted by solstice View Post
I disagree. The paper power gap is the peak power gap under one set of controlled conditions. If one engine fluctuates downwards with larger amplitudes and/or more frequently during a fastest lap the average power advantage is larger than the paper gap.
OK, too much technical speculation here for me to argue further.
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      11-05-2020, 03:14 PM   #26
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Originally Posted by CanAutM3 View Post
OK, too much technical speculation here for me to argue further.
The improved internal cooling of the S58 looks to be facts not speculation.
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      11-05-2020, 03:18 PM   #27
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Quote:
Originally Posted by solstice View Post
The improved internal cooling of the S58 looks to be facts not speculation.
That this cooling will improve the G8X 'ring lap time over and above the stated power increase is too much speculation for me to debate.
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      11-05-2020, 03:39 PM   #28
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Originally Posted by CanAutM3 View Post
That this cooling will improve the G8X 'ring lap time over and above the stated power increase is too much speculation for me to debate.
It’s not much to debate it’s a technical advancement of the G8X that could impact the ring time. Let’s leave it at that. This whole thread is a bunch of facts leading to rampant speculation on the result from a complex array of parameters and how well they are working dynamically in the G8X during a Nordschleife lap. The range of the possible outcome is quite large.
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      11-05-2020, 03:47 PM   #29
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Originally Posted by solstice View Post
It’s not much to debate it’s a technical advancement of the G8X that could impact the ring time. Let’s leave it at that. This whole thread is a bunch of facts leading to rampant speculation on the result from a complex array of parameters and how well they are working dynamically in the G8X during a Nordschleife lap. The range of the possible outcome is quite large.
Hmmm, not sure I agree here. Yes, this thread is all about speculation. But what you're doing here is way over the top to be meaningful.
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      11-05-2020, 04:01 PM   #30
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Hmmm, not sure I agree here. Yes, this thread is all about speculation. But what you're doing here is way too deep to be meaningful.
Let’s see what the time gap end up to be and see if it seems excessive before we make that determination. If your guess is spot on, I have no problem conceding.
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      11-24-2020, 02:32 PM   #31
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Does anyone know what the weight difference will be for a base model with 6MT/RWD vs the competition model w AWD/auto? I doubt it will be enough to negate the positive track results of AWD/ZF combo...but just curious. I'd have to imagine the base would be a couple hundred lbs lighter ...?
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      11-25-2020, 06:22 AM   #32
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Does anyone know what the weight difference will be for a base model with 6MT/RWD vs the competition model w AWD/auto? I doubt it will be enough to negate the positive track results of AWD/ZF combo...but just curious. I'd have to imagine the base would be a couple hundred lbs lighter ...?
A couple of hundred is the right estimate IMO.

We know that 6MT to 8AT is 50lb on the G8X and AWD on other BMW models is 140~150lb, so 200lb is in the right ballpark. Also figure that an 8AT AWD drivetrain will have a fair bit more rotating inertia and loss than a 6MT RWD one, so the 2 might be closer than we think.
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      11-25-2020, 07:02 AM   #33
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Quote:
Originally Posted by CanAutM3 View Post
A couple of hundred is the right estimate IMO.

We know that 6MT to 8AT is 50lb on the G8X and AWD on other BMW models is 140~150lb, so 200lb is in the right ballpark. Also figure that an 8AT AWD drivetrain will have a fair bit more rotating inertia and loss than a 6MT RWD one, so the 2 might be closer than we think.
That's what I'm thinking too. With a good driver and some nice tires I'm sure the RWD 6MT wouldn't be too far off as long as the power can be put down. I'm sure there's a pretty effective traction control system now that hopefully isn't too intrusive. On some of the 6MT nurburgring test vids I can see the rear end just ever so slightly step out - but it's not out of control or full on drift out of every corner. I think it's going to make for a fun drive if you aren't concerned with every tenth of a second
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      11-25-2020, 10:53 AM   #34
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Quote:
Originally Posted by Jacky Treehorn View Post
That's what I'm thinking too. With a good driver and some nice tires I'm sure the RWD 6MT wouldn't be too far off as long as the power can be put down. I'm sure there's a pretty effective traction control system now that hopefully isn't too intrusive. On some of the 6MT nurburgring test vids I can see the rear end just ever so slightly step out - but it's not out of control or full on drift out of every corner. I think it's going to make for a fun drive if you aren't concerned with every tenth of a second
The difference can also be bigger than you think on the track and street. I’d be careful to say they will perform similarly.

As for fun to drive, if you are a 6 MT die hard there’s no reason sweating over the performance difference, is there?
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      12-01-2020, 07:06 PM   #35
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I think that's a good question, especially over a large track like the Ring. Does the power advantage outweigh the extra weight, the automatic tranny, and the crappy brakes? I would say no, but you never really know. The G8X is what 6 or 7 years newer, you would think that with the pace technology advances, it should be faster around the track. I hope to be surprised. It would be cool to see the M3 the leader of the pack again.
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      12-01-2020, 07:09 PM   #36
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As for fun to drive, if you are a 6 MT die hard there’s no reason sweating over the performance difference, is there?
Totally agree. This is a 4 door daily driven car. At the end of the day, it REALLY doesn't matter how many seconds the car is slower around some random race track driven by a stranger. Its about driving enjoyment.
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