quick question abou t E90 sedan speculations...

m_bazeepaymon · 04-27-2007, 10:53 PM

will e90 sedan have a cf roof? do we have any facts about that yet?

swamp2 · 04-27-2007, 11:20 PM

I have read the rumor is no. Makes sense to me since those really going for lightweight will certainly opt for the coupe only. The extra weight on the sedan anyway from making it four doors would kind of make all the expense of the CF roof an excess and a bit contradictory in the overall design.

m_bazeepaymon · 04-28-2007, 02:58 AM

Quote:

Originally Posted by swamp2

I have read the rumor is no. Makes sense to me since those really going for lightweight will certainly opt for the coupe only. The extra weight on the sedan anyway from making it four doors would kind of make all the expense of the CF roof an excess and a bit contradictory in the overall design.

actually to correct you the sedan is lighter than the coupe... especially for the E46 the Sedans were better performers than the Coupes...

Im just thinking the reason they are not putting CF roof on the sedan is because they want to even the handling of the coupe and sedan becasue the suspension of the sedan is tighter...

Any E46 Fanatics here to back me up on this?

southlight · 04-28-2007, 03:19 AM

Quote:

Originally Posted by m_bazeepaymon

actually to correct you the sedan is lighter than the coupe... especially for the E46 the Sedans were better performers than the Coupes...

Im just thinking the reason they are not putting CF roof on the sedan is because they want to even the handling of the coupe and sedan becasue the suspension of the sedan is tighter...

Any E46 Fanatics here to back me up on this?

No, that's wrong for the E90/92. The E92 335 is 10kg lighter than the sedan. And I don't know if the sedan's supension is stiffer, but the handling of the Coupe is better than the sedan's according to most of the tests...
The reason for not putting the CF roof on the sedan is that the Coupe is the "top of the range" M3 so it gets the CF roof whereas the M3 sedan is marketed a lil' bit under the coupe. So if your only concern is handling, your only choice is the Coupe...

Best regards, south

fueledbymetal · 04-28-2007, 06:08 AM

I don't have the answer. However, I want the sedan WITH the sunroof, so if they don't offer the CF roof on the e90 M3 that's OK with me

m_bazeepaymon · 04-28-2007, 12:55 PM

Quote:

Originally Posted by southlight

No, that's wrong for the E90/92. The E92 335 is 10kg lighter than the sedan. And I don't know if the sedan's supension is stiffer, but the handling of the Coupe is better than the sedan's according to most of the tests...
The reason for not putting the CF roof on the sedan is that the Coupe is the "top of the range" M3 so it gets the CF roof whereas the M3 sedan is marketed a lil' bit under the coupe. So if your only concern is handling, your only choice is the Coupe...

Best regards, south

southlight can you please post me the source on this? its not that I do not believe you its just I am very surprised BMW actually did this

southlight · 04-28-2007, 12:59 PM

Quote:

Originally Posted by m_bazeepaymon

southlight can you please post me the source on this? its not that I do not believe you its just I am very surprised BMW actually did this

The source for the weight difference? You can check it on the BMW page. Referring the CF roof, that's what Scott said some time ago. I can search for that if you don't find it...

Best regards, south

Mii · 04-28-2007, 01:18 PM

E90 335i sedan is about 23lbs heavier than the similar equipped E92 335i coupe according to the specs. If BMW utilizes all light weight material on all panels, it would be interesting to know what's the weight difference saved between M3 sedan/coupe. As far as I know sedan has got the larger roof surface area, if it uses CF, it will safe more weight in theory, though the net weight should still be slightly heavier than coupe.

paulyd · 04-28-2007, 02:24 PM

Car and Driver says no carbon fiber roof. But it appears their reasoning is flawed, because coupes were seen testing with a sunroof also...

"The spy shots also caught an open sunroof, which suggests the more practical sedan will forgo the extreme weight-saving carbon-fiber roof of the coupe."

cncmastr · 04-28-2007, 02:29 PM

Quote:

Originally Posted by m_bazeepaymon

actually to correct you the sedan is lighter than the coupe... especially for the E46 the Sedans were better performers than the Coupes...

Im just thinking the reason they are not putting CF roof on the sedan is because they want to even the handling of the coupe and sedan becasue the suspension of the sedan is tighter...

Any E46 Fanatics here to back me up on this?

You are right about he sedan being the better performer as far as the E46's go.

m_bazeepaymon · 04-28-2007, 04:38 PM

Quote:

Originally Posted by southlight

The source for the weight difference? You can check it on the BMW page. Referring the CF roof, that's what Scott said some time ago. I can search for that if you don't find it...

Best regards, south

no the source I was looking for is the source on how the Sedan 335 is worst than the coupe 335 in testing....

thats all...
Because BMW followed the same tradition .. the E36 sedan was a better performer than the E36 coupe, the E46 sedan was a better than E46 coupe...

i'm just curious, there is no disrespect to anybody

esquire · 04-28-2007, 05:18 PM

Quote:

Originally Posted by m_bazeepaymon

no the source I was looking for is the source on how the Sedan 335 is worst than the coupe 335 in testing....

thats all...
Because BMW followed the same tradition .. the E36 sedan was a better performer than the E36 coupe, the E46 sedan was a better than E46 coupe...

i'm just curious, there is no disrespect to anybody

that shouldn't really surprise you

the e92 335i:
weighs 3571 lbs.
has 51.2/48.8 front/rear weight distribution
has greater structural rigidity by nature of being a 2 door vehicle
sits at 54.9 inches (lower center of gravity)

the e90 335i :
weighs 3594 lbs.
has 51.5/ 48.5 front/rear weight distirbution
and has less structural rigidity with 4 doors.
sits at 55.9 inches

m_bazeepaymon · 04-28-2007, 06:09 PM

Quote:

Originally Posted by esquire

that shouldn't really surprise you

the e92 335i:
weighs 3571 lbs.
has 51.2/48.8 front/rear weight distribution
has greater structural rigidity by nature of being a 2 door vehicle
sits at 54.9 inches (lower center of gravity)

the e90 335i :
weighs 3594 lbs.
has 51.5/ 48.5 front/rear weight distirbution
and has less structural rigidity with 4 doors.
sits at 55.9 inches

thanks...

im gonna do some more searching betwen the E36 and E46 hopefully they wont have same contrast as the E92 and E90 does or ill stil keep questioning

Back in the days the coupe was heavier also (barely) so yea...
your probably right...

04-27-2007, 10:53 PM	#1
m_bazeepaymon Major 58 Rep 1,075 Posts Drives: 2008 E92 335i Join Date: Sep 2006 Location: Los Angeles iTrader: (4)	quick question abou t E90 sedan speculations... will e90 sedan have a cf roof? do we have any facts about that yet? __________________ ZzZzZ'er
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04-27-2007, 11:20 PM	#2
swamp2 Lieutenant General 611 Rep 10,407 Posts Drives: E92 M3 Join Date: Sep 2006 Location: San Diego, CA USA iTrader: (3)	What I've heard I have read the rumor is no. Makes sense to me since those really going for lightweight will certainly opt for the coupe only. The extra weight on the sedan anyway from making it four doors would kind of make all the expense of the CF roof an excess and a bit contradictory in the overall design.
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04-28-2007, 06:08 AM	#5
fueledbymetal Lieutenant 129 Rep 579 Posts Drives: 2024 G80 6spd, Cayman GTS 4.0 Join Date: May 2006 Location: Lexington Park, MD iTrader: (0)	I don't have the answer. However, I want the sedan WITH the sunroof, so if they don't offer the CF roof on the e90 M3 that's OK with me __________________ Instagram: te37sl_m3
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04-28-2007, 01:18 PM	#8
Mii Lieutenant 393 Rep 487 Posts Drives: BMW Join Date: Mar 2007 Location: US iTrader: (0)	E90 335i sedan is about 23lbs heavier than the similar equipped E92 335i coupe according to the specs. If BMW utilizes all light weight material on all panels, it would be interesting to know what's the weight difference saved between M3 sedan/coupe. As far as I know sedan has got the larger roof surface area, if it uses CF, it will safe more weight in theory, though the net weight should still be slightly heavier than coupe.
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04-28-2007, 02:24 PM	#9
paulyd Second Lieutenant 8 Rep 278 Posts Drives: 2009 M3 Join Date: Dec 2006 Location: Chicago iTrader: (0)	Car and Driver says no carbon fiber roof. But it appears their reasoning is flawed, because coupes were seen testing with a sunroof also... "The spy shots also caught an open sunroof, which suggests the more practical sedan will forgo the extreme weight-saving carbon-fiber roof of the coupe."
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