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      02-22-2021, 11:02 AM   #1
Mani59
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Chassis Details. G80 M3 and G82 M4 explained, Episode 13

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      02-22-2021, 11:29 AM   #2
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The chassis bracing system looks impressive. I can’t say how it compares to the F8X though, it would have been nice if they had an F8X as comparison in the video to highlight enhancements.
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      02-22-2021, 11:46 AM   #3
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what is the color ? YMB ? LSB ?
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      02-22-2021, 11:55 AM   #4
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Quote:
Originally Posted by solstice View Post
The chassis bracing system looks impressive. I canít say how it compares to the F8X though, it would have been nice if they had an F8X as comparison in the video to highlight enhancements.
I saw a exhaust note comparison vid pop up recently. Maybe a chassis bracing etc.. one will also once the cars are out there
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      02-22-2021, 11:57 AM   #5
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Quote:
Originally Posted by Saphirschwarz View Post
what is the color ? YMB ? LSB ?
Mexico Blue.
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      02-22-2021, 12:16 PM   #6
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Looking at all the undercarriage bracing, I am surprised it isn't heavier. It seems too much for a daily driver, but it is the only MT unless I wait for the 650hp Cadillac CT5-v this summer. I would choose a horse before a Cadillac
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      02-22-2021, 12:25 PM   #7
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the underbody front and rear v-bracing looks promising, however structural rigidity isn't the problem - the f8x is plenty stiff.

I wish they would of done something different for the springs/shocks (bilstein damptonic?) and a next gen edc system (like PASM from porsche). And why not ride height adjustment from the factory? (maybe on the competition model)

at the price they're asking there's no reason why they shouldn't evolve the springs/shocks combo.
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      02-22-2021, 12:26 PM   #8
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All this mambo jambo may sound cool but no actual data on how much of an improvement compared to an F80? What's actually new compared to previous gen?

Is the rear subframe still connected without bushings to the chassis?
Under the hood bracing looks fussy compared to previous gen, how much % improvement in stiffness we're talking?
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      02-22-2021, 12:46 PM   #9
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Quote:
Originally Posted by solstice View Post
The chassis bracing system looks impressive. I can’t say how it compares to the F8X though, it would have been nice if they had an F8X as comparison in the video to highlight enhancements.
The undercarriage bracing seems to be more extensive than on the F8x, but the rear axle of the old car also had bracing extending to the rockers. The front end seems to have some additional bracing, that's for sure. F80's aluminium underbody panel was designed to be structural as well. Otherwise, it's all the same. Nothing new.

Under the bonnet, I cannot believe they've replaced the beautiful CF piece with an ugly steel unit. That piece also no longer extends to the A-pillar. The bulkhead brace made of Al was retained and a steel strut brace between strut towers was added.

Torsional rigidity of the F8x is not far away from the E46 M3 GTR as per Biermann's very educational M4 walkaround from 2014.

And thanks for filming it vertically so I couldn't see as much!
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      02-22-2021, 01:00 PM   #10
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Good stuff.

Re another posters comment above. There was great fanfare made of the F82 launching with

CF Driveshaft
CF Tailgate
CF Engine Brace

None present in this gen. I guess cost Vs benefit has to come into it but they were special parts.

PS when I'm saying CF this maybe CFFP but you see my point perhaps.
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      02-22-2021, 01:02 PM   #11
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At least the tailgate and engine brace will probably reappear in a CS or CSL model; maybe they learnt from the F8x generation not to shoot your arrows too early
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      02-22-2021, 01:07 PM   #12
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Interested to see how the new springs / dampers will perform like. A weak point on the F8x platform which required upgrades to track it properly. Really think they should rebadge some Bilstein type coilover technology and offer as factory option for people that are going to track this car.
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      02-22-2021, 01:08 PM   #13
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Really enjoyed seeing all the underbody bracing. A step up from the F8X which itself was a step up from the E9X.

I'm also not surprised the engine bay brace is not CF. I expect it will be in the CS/GTS versions.

I think the days of getting extra goodies from BMW are over, now people will have to pay for them. As they should, given the overall love for other brands that are much more expensive than the M3.

Last edited by SYT_Shadow; 02-22-2021 at 01:19 PM..
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      02-22-2021, 01:18 PM   #14
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CanAutM3 your thoughts?
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      02-22-2021, 01:22 PM   #15
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Strange that they wouldn't quote the increase in stiffness vs the F80.
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      02-22-2021, 02:02 PM   #16
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Quote:
Originally Posted by SYT_Shadow View Post
Really enjoyed seeing all the underbody bracing. A step up from the F8X which itself was a step up from the E9X.

I'm also not surprised the engine bay brace is not CF. I expect it will be in the CS/GTS versions.

I think the days of getting extra goodies from BMW are over, now people will have to pay for them. As they should, given the overall love for other brands that are much more expensive than the M3.
E9x to F8x was much of a bigger progress in terms of chassis than this. Where do you see the step up from F8x - apart from the front axle bracing?

I don't see why they would spend the extra money to include a new CF strut brace just for some limited models. If anything, they would've done it across the range to spread the costs.
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      02-22-2021, 02:04 PM   #17
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Quote:
Originally Posted by frankiebones View Post
Mexico Blue.
It's "Individual special paint Riviera Blue" according to a reply from BMW M on Youtube
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      02-22-2021, 02:06 PM   #18
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Quote:
Originally Posted by swagon View Post
E9x to F8x was much of a bigger progress in terms of chassis than this. Where do you see the step up from F8x - apart from the front axle bracing?

I don't see why they would spend the extra money to include a new CF strut brace just for some limited models. If anything, they would've done it across the range to spread the costs.
The front and rear axle bracing is larger and more comprehensive than the F8X

Time will tell if I'm right about the CF goodies. I don't have any insider information.
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      02-22-2021, 02:22 PM   #19
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Quote:
Originally Posted by M2Cmtl View Post
Strange that they wouldn't quote the increase in stiffness vs the F80.
Agree I specifically remember some measurements of Nm/mom flex that was crazy high on the last gen. I'm sure this I higher by just not providing the details yet it seems.
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      02-22-2021, 02:29 PM   #20
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      02-22-2021, 02:51 PM   #21
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Quote:
Originally Posted by mbanck View Post
It's "Individual special paint Riviera Blue" according to a reply from BMW M on Youtube
Nice, the two are pretty close. I submitted a request for Yas Marina BLue and they tried to sell me on Mexico Blue.

Here are the two side by side with Riviera in the foreground and Mexico Blue in the back.
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      02-22-2021, 03:39 PM   #22
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Quote:
Originally Posted by Mani59 View Post
Sounds amazing. Can we have a kit for the front already?
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