BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Cosmetic/Visual (Exterior + Interior) Modifications
 
BPM
Post Reply
 
Thread Tools Search this Thread
      11-28-2007, 09:24 AM   #1
gadget
Major
gadget's Avatar
United_States
108
Rep
1,161
Posts

Drives: 09 e92///M SSII DCT
Join Date: Nov 2007
Location: US

iTrader: (0)

Carbon Fiber Hood

How likely is it that a Carbon Fiber Hood that matched the roof will become available as an after market option. if it were would you get it?

I think it would look OK but would need to see it in person to make up my mind.
Appreciate 0
      11-28-2007, 05:02 PM   #2
UltimateBMW
Brigadier General
UltimateBMW's Avatar
396
Rep
3,288
Posts

Drives: MP4
Join Date: Dec 2006
Location: South

iTrader: (0)

How probable? I would say it is a definate. When it will come out I can't tell you. But there are CF hoods available for the e46 M3.

Would I personally buy one? Probably not because of the pure expense of the thing. $3000+ for a carbon fiber hood isn't really worth that much to me when the current hood on the car isn't necessarily bland. I can easily see a CF hood on the M3 looking bad ass though.
Appreciate 0
      11-28-2007, 05:36 PM   #3
Epacy
Reincarnated
Epacy's Avatar
245
Rep
4,227
Posts

Drives: 02 Maxima SE
Join Date: Mar 2007
Location: IL

iTrader: (0)

Garage List
2008 M3  [0.00]
Yeah, but how much weight are we talking about saving? The exisitng hood is already made of aluminum.
__________________
Appreciate 0
      11-28-2007, 07:26 PM   #4
UltimateBMW
Brigadier General
UltimateBMW's Avatar
396
Rep
3,288
Posts

Drives: MP4
Join Date: Dec 2006
Location: South

iTrader: (0)

How much would you guess the paint weighs?
Appreciate 0
      11-29-2007, 08:44 AM   #5
gadget
Major
gadget's Avatar
United_States
108
Rep
1,161
Posts

Drives: 09 e92///M SSII DCT
Join Date: Nov 2007
Location: US

iTrader: (0)

Although CF hoods are normally offer weight savings I agree that the difference with aluminum may not warrant the expenses as any weight savings would be minimal.

I am more interested in the CF hood from an aesthetic point of view and whether or not it would complement the roof.

I am most interested in seeing this with either AW or SSII
Appreciate 0
      11-29-2007, 08:00 PM   #6
OC ///M
Dr. Octagon
OC ///M's Avatar
United_States
260
Rep
1,919
Posts

Drives: Moonstone e92 M3
Join Date: Feb 2007
Location: South County

iTrader: (0)

With arrivals stateside expected in March, I can tell you that companies like Vorsteiner will have them available around the same time if not sooner...
__________________
OC ///M

2013 E92 M3 Individual
Sold: 2011 E92 M3 SSII | Sold: 2008 E92 M3 SSII | Into a Wall: 2008 E92 M3 SSII | Sold: 2007 E92 335i JB
Appreciate 0
      11-30-2007, 12:58 AM   #7
Big Windy
Major General
Big Windy's Avatar
United_States
150
Rep
5,124
Posts

Drives: None
Join Date: Mar 2007
Location: Bay Area

iTrader: (0)

Quote:
Originally Posted by UltimateBMW View Post
How much would you guess the paint weighs?
negligible i'd think. maybe 2-4 pounds max with all the coats. but thats a total guess.

i don't think i'd go for it. i like the stock hood and i think it might look retarded/ricer with a CF hood. car would have to be SSII or AW to pull it off though.
Appreciate 0
      11-30-2007, 02:41 AM   #8
swamp2
Lieutenant General
swamp2's Avatar
United_States
609
Rep
10,407
Posts

Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (3)

Quote:
Originally Posted by Epacy View Post
Yeah, but how much weight are we talking about saving? The exisitng hood is already made of aluminum.
The CF roof saved a whopping 11 lbs compared to painted steel (compared to a steel roof without sunroof). It would probably be something like 30 lb in steel, 20 lb in CF (very rough but reasonable estimate). The hood is larger and has more reinforcing sheets but could use a thinner material since it is a non structural/safety component. I'd guess in steel a hood might end up also around 30 lbs. Switching to aluminum could save quite a bit, maybe getting that down to 20 lb and about the same 10 or so lb in CF. So you would save about the same 10 lb going from aluminum to CF for the hood.

HOWEVER... Please (OP) do not do this hideous mod to your beautiful M3 JMHO...
Appreciate 0
      11-30-2007, 10:51 AM   #9
UltimateBMW
Brigadier General
UltimateBMW's Avatar
396
Rep
3,288
Posts

Drives: MP4
Join Date: Dec 2006
Location: South

iTrader: (0)

If it's only a 10lb saving in weight, then the 2-3 lbs. from paint isn't negligible.

Plus, this mod would mess up the 50/50 weight distribution! You'd have to buy the CF bootlid as well just to keep things proper. So this mod is definitely not worth it.
Appreciate 0
      11-30-2007, 12:30 PM   #10
swamp2
Lieutenant General
swamp2's Avatar
United_States
609
Rep
10,407
Posts

Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (3)

Quote:
Originally Posted by UltimateBMW View Post
If it's only a 10lb saving in weight, then the 2-3 lbs. from paint isn't negligible.

Plus, this mod would mess up the 50/50 weight distribution! You'd have to buy the CF bootlid as well just to keep things proper. So this mod is definitely not worth it.
...Except that 10 lb is one half of one percent of a difference in weight balance!
Appreciate 0
      11-30-2007, 06:33 PM   #11
UltimateBMW
Brigadier General
UltimateBMW's Avatar
396
Rep
3,288
Posts

Drives: MP4
Join Date: Dec 2006
Location: South

iTrader: (0)

That would make it 49.5/50.5. Which is not 50/50... :sad0147:
Appreciate 0
      11-30-2007, 09:48 PM   #12
gadget
Major
gadget's Avatar
United_States
108
Rep
1,161
Posts

Drives: 09 e92///M SSII DCT
Join Date: Nov 2007
Location: US

iTrader: (0)

Isn't the 50/50 without the driver. Unless you weigh nothing you are going to mess up the weight just by sitting in the car. Since you (or at least a part of you will be in the front 50 of the car, the CF hood would actually help offset your weight and improve balance.

Bottom Line 10lbs more or less won't make a difference at all.
Appreciate 0
      11-30-2007, 10:05 PM   #13
nusevad
O! So Sour!!
nusevad's Avatar
United_States
549
Rep
15,615
Posts

Drives: Fast 240z / Slow M3
Join Date: Apr 2007
Location: 'Merica!

iTrader: (24)

Garage List
1971 Datsun 240z  [0.00]
2008 M3  [9.60]
I bet Vorsteiner will come up with a sick CF hood with more functional vents for the new M.
__________________
Appreciate 0
      12-03-2007, 01:33 AM   #14
UltimateBMW
Brigadier General
UltimateBMW's Avatar
396
Rep
3,288
Posts

Drives: MP4
Join Date: Dec 2006
Location: South

iTrader: (0)

Quote:
Originally Posted by gadget View Post
Isn't the 50/50 without the driver. Unless you weigh nothing you are going to mess up the weight just by sitting in the car. Since you (or at least a part of you will be in the front 50 of the car, the CF hood would actually help offset your weight and improve balance.

Bottom Line 10lbs more or less won't make a difference at all.
LOL, this debate could go on endlessly. While some of you would overhang into the front 50% of the car... where would the rest of you be? In the BACK 50%. Do you really give the BMW M engineers so little credit that they wouldn't put the seat track as near the center line of the car as possible? As with all real measurements if you try to mess it up you easily can, ie moving the seat max forward or max rear. However, I think most people would probably sit near the middle of the seat tracking.

Anyways, 10 lbs might not matter I agree with you. But if your going to spend the extra 3-4 grand just for a CF hood that saves you a few pounds I'm sure you would want to get the most out of it as possible, 40 lbs vs 50 lbs is a 20% difference. And the lower the total pounds saved the bigger the % increase would be.
Appreciate 0
      12-03-2007, 10:19 PM   #15
Champagne
Second Lieutenant
Champagne's Avatar
Sweden
13
Rep
271
Posts

Drives: E92 M3 Coupé
Join Date: Nov 2007
Location: Sweden, Stockholm

iTrader: (0)

Quote:
Originally Posted by gadget View Post
Isn't the 50/50 without the driver. Unless you weigh nothing you are going to mess up the weight just by sitting in the car. Since you (or at least a part of you will be in the front 50 of the car, the CF hood would actually help offset your weight and improve balance.

Bottom Line 10lbs more or less won't make a difference at all.
I believe that it's 50/50 with a driver of 75kg, 70kg luggage and 3/4 fuel.
Appreciate 0
      12-04-2007, 02:34 AM   #16
swamp2
Lieutenant General
swamp2's Avatar
United_States
609
Rep
10,407
Posts

Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (3)

Quote:
Originally Posted by Champagne View Post
I believe that it's 50/50 with a driver of 75kg, 70kg luggage and 3/4 fuel.
It is 51.2%F/48.8%R as tested by German Sportauto. I suspect they use EU unladen standards which include 68kg driver, 90% fuel and 7kg luggage.
Appreciate 0
      12-04-2007, 07:35 AM   #17
Epacy
Reincarnated
Epacy's Avatar
245
Rep
4,227
Posts

Drives: 02 Maxima SE
Join Date: Mar 2007
Location: IL

iTrader: (0)

Garage List
2008 M3  [0.00]
Quote:
Originally Posted by swamp2 View Post
It is 51.2%F/48.8%R as tested by German Sportauto. I suspect they use EU unladen standards which include 68kg driver, 90% fuel and 7kg luggage.
Why would you quote f/r distribution with a driver involved? Doesn't seem like that would give an accurate assesment.
__________________
Appreciate 0
      12-04-2007, 07:38 AM   #18
Epacy
Reincarnated
Epacy's Avatar
245
Rep
4,227
Posts

Drives: 02 Maxima SE
Join Date: Mar 2007
Location: IL

iTrader: (0)

Garage List
2008 M3  [0.00]
Quote:
Originally Posted by UltimateBMW View Post
How much would you guess the paint weighs?
Don't know how much the paint weighs for just the hood. However, in the recent National Geographic tour of the BMW plant in Spartanburg, they said paint adds 20lbs to the whole car of a Z4.
__________________
Appreciate 0
      12-04-2007, 01:12 PM   #19
swamp2
Lieutenant General
swamp2's Avatar
United_States
609
Rep
10,407
Posts

Drives: E92 M3
Join Date: Sep 2006
Location: San Diego, CA USA

iTrader: (3)

Quote:
Originally Posted by Epacy View Post
Why would you quote f/r distribution with a driver involved? Doesn't seem like that would give an accurate assesment.
. I think the best way to quote weight balance would be exactly the same way weight itself is quoted. Per a particular standard and and standard that includes a driver. Were you just being sarcastic?
Appreciate 0
      12-05-2007, 08:34 AM   #20
Epacy
Reincarnated
Epacy's Avatar
245
Rep
4,227
Posts

Drives: 02 Maxima SE
Join Date: Mar 2007
Location: IL

iTrader: (0)

Garage List
2008 M3  [0.00]
Quote:
Originally Posted by swamp2 View Post
. I think the best way to quote weight balance would be exactly the same way weight itself is quoted. Per a particular standard and and standard that includes a driver. Were you just being sarcastic?
No.
__________________
Appreciate 0
      01-02-2008, 10:15 PM   #21
OC ///M
Dr. Octagon
OC ///M's Avatar
United_States
260
Rep
1,919
Posts

Drives: Moonstone e92 M3
Join Date: Feb 2007
Location: South County

iTrader: (0)

I realize these are not representative of an e92 M3 but I just wanted to get the imagination going...

Here's a couple reference pics. Some choose not to paint or to use a blending of the cf with the body color, ie. just the powerdome cf blended to body color.

I took this at Bimmerfest last year:


This was from a local meet:


Reference link to meet

still looking for the "blended" pics...

__________________
OC ///M

2013 E92 M3 Individual
Sold: 2011 E92 M3 SSII | Sold: 2008 E92 M3 SSII | Into a Wall: 2008 E92 M3 SSII | Sold: 2007 E92 335i JB

Last edited by OC ///M; 01-16-2008 at 07:19 PM..
Appreciate 0
      01-25-2008, 08:03 PM   #22
sayemthree
Major General
sayemthree's Avatar
594
Rep
5,448
Posts

Drives: ‘20 X3mC ‘20 Raptor ‘04 X3 6mt
Join Date: Aug 2007
Location: usa so cal , AZ

iTrader: (0)

the stock hood is aluminum. $$ per pound of weight savings will be rediculous. thats IF there is any savings.


only worth it if you want the look. I dont.
__________________
Fore Sale Rare 6 speed manual X3 3.oi silver over grey. PM me
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:43 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST