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
 
Post Reply
 
Thread Tools Search this Thread
      08-15-2007, 06:08 PM   #1
nechronics
Lieutenant
nechronics's Avatar
Syria
8
Rep
438
Posts

 
Drives: M3
Join Date: May 2007
Location: south tampa

iTrader: (0)

Are you keeping spoiler or not?

Keeping or deleting the rear spoiler?

I haven't decided yet

Last edited by nechronics; 10-13-2007 at 07:16 PM.
Appreciate 0
      08-15-2007, 06:24 PM   #2
DonM3
Captain
United Kingdom
6
Rep
629
Posts

 
Drives: AW e92 M3
Join Date: Mar 2007
Location: London

iTrader: (1)

keeping
Appreciate 0
      08-15-2007, 07:50 PM   #3
RandyB
Lieutenant Colonel
RandyB's Avatar
United_States
15
Rep
1,504
Posts

 
Drives: '03 330i, '09 M3 Coupe
Join Date: Feb 2007
Location: Texas

iTrader: (0)

Deleting. Bye bye...
Appreciate 0
      08-15-2007, 08:03 PM   #4
normtrum
Colonel
normtrum's Avatar
27
Rep
2,227
Posts

 
Drives: e90 335i, e46 330i
Join Date: Feb 2007
Location: PNW

iTrader: (1)

Keeping. Hellooooo!
__________________
07 335i sedan | Steptronic | Black saphire | Terra | ZPP | ZSP | Cold Weather | CA | PDC | Nav | OEM Alarm
Appreciate 0
      08-15-2007, 09:57 PM   #5
GregW / Oregon
Commander-In-Chief
United_States
136
Rep
7,638
Posts

 
Drives: 2015 M4 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

iTrader: (2)

Garage List
Spoiler

Quote:
Originally Posted by nechronics View Post
Keeping or deleting the rear spoiler?

I'm deleting...
Keeping--it is so small it's not a maor design element, but it does clean up the airflow and reduce some drag at speed.
__________________

Greg Lake Oswego, Oregon, USA
2015 M4 Coupe - Silverstone/Sakhir/CF
2012 ML350
Appreciate 0
      08-15-2007, 11:16 PM   #6
jtown
Lieutenant
jtown's Avatar
12
Rep
596
Posts

 
Drives: TBD
Join Date: Sep 2006
Location: Norcal

iTrader: (0)

Will it cost $0 to delete it? If so I'll keep it and sell it.
Appreciate 0
      08-15-2007, 11:20 PM   #7
jpm3
Private
0
Rep
69
Posts

 
Drives: (sold) 02 E46 M3 Avus Blau
Join Date: Nov 2006
Location: O-Town, FL

iTrader: (0)

keeping
__________________
Sold - 2002 E46 M3 Avus Blue
Appreciate 0
      08-16-2007, 01:33 AM   #8
Uli_HH
Lieutenant
Uli_HH's Avatar
Germany
32
Rep
572
Posts

 
Drives: AW M3 E90)/ 523i Touring
Join Date: Nov 2005
Location: Hamburg Germany

iTrader: (0)

No question...keeping...because deleting meen you couldnīt upgrade the speed from 250km/h to 280km/h...bmw M-GmbH donīt make this upgrade posible without this rear spoiler...
Appreciate 0
      08-16-2007, 01:50 AM   #9
schnell325
Bored at work....
schnell325's Avatar
Canada
43
Rep
3,875
Posts

 
Drives: '08 M3,'11 335xi
Join Date: Aug 2007
Location: BC

iTrader: (5)

^^^interesting. I wonder if BMW (US/Canada) has this option...
Appreciate 0
      08-16-2007, 04:27 AM   #10
m_bazeepaymon
Major
19
Rep
1,075
Posts

 
Drives: 2008 E92 335i
Join Date: Sep 2006
Location: Los Angeles

iTrader: (4)

Send a message via AIM to m_bazeepaymon
keeps...
__________________


ZzZzZ'er
Appreciate 0
      08-16-2007, 05:00 AM   #11
13eastie
Lieutenant
13eastie's Avatar
United Kingdom
19
Rep
563
Posts

 
Drives: 2007 E92 M3
Join Date: Mar 2007
Location: London

iTrader: (0)

Garage List
Quote:
Originally Posted by Uli_HH View Post
No question...keeping...because deleting meen you couldnīt upgrade the speed from 250km/h to 280km/h...bmw M-GmbH donīt make this upgrade posible without this rear spoiler...
I had heard this too, although my dealer was unable to confirm the availability of the "M-Driver" option (as I believe it is called).

Has anyone seen evidence of the availability of this option?

In any case, the "Gurney flap" is pretty inoffensive (cf. "Powerdome"!)...
Appreciate 0
      08-16-2007, 05:49 AM   #12
DonM3
Captain
United Kingdom
6
Rep
629
Posts

 
Drives: AW e92 M3
Join Date: Mar 2007
Location: London

iTrader: (1)

yeh I've seen it.... I think it was on german option list thread a couple months ago..... also remember reading that if you get the spoiler removed you cant have it delimited.......

Anyway, dont you have to have some sort of race license to get it delimited or am I chatting rubbish.....



Quote:
Originally Posted by 13eastie View Post
I had heard this too, although my dealer was unable to confirm the availability of the "M-Driver" option (as I believe it is called).

Has anyone seen evidence of the availability of this option?

In any case, the "Gurney flap" is pretty inoffensive (cf. "Powerdome"!)...
Appreciate 0
      08-16-2007, 06:13 AM   #13
Pidef
New Member
1
Rep
22
Posts

 
Drives: E92 M3
Join Date: Apr 2007
Location: Switzerland

iTrader: (0)

Quote:
Originally Posted by 13eastie View Post
I had heard this too, although my dealer was unable to confirm the availability of the "M-Driver" option (as I believe it is called).

Has anyone seen evidence of the availability of this option?

In any case, the "Gurney flap" is pretty inoffensive (cf. "Powerdome"!)...
For sure it's available here in Switzerland, I took it. Will be delivered end of October.
Appreciate 0
      08-16-2007, 07:12 AM   #14
Uli_HH
Lieutenant
Uli_HH's Avatar
Germany
32
Rep
572
Posts

 
Drives: AW M3 E90)/ 523i Touring
Join Date: Nov 2005
Location: Hamburg Germany

iTrader: (0)

The 280km/h "M-Driver"option doesnīt meen delimited - they only increase the limit, because the M5 could reach 305km/h with this option and they wonīt hurt the bigger car (and sales).
According to my dealer fully delimited 310km/h are posible. Also he claims that the M-driver option wouldnīt be installed as soon as the car is more than 2000km old.
Appreciate 0
      08-16-2007, 08:10 AM   #15
aloha03gs
Enlisted Member
aloha03gs's Avatar
United_States
0
Rep
49
Posts

 
Drives: Lexus GS
Join Date: Aug 2007
Location: Honolulu, Hawaii

iTrader: (0)

Send a message via AIM to aloha03gs Send a message via MSN to aloha03gs Send a message via Yahoo to aloha03gs
definitely keeping here...in fact I really like the spoiler...gives it a nice and sporty touch to the car imo
__________________
http://i25.photobucket.com/albums/c93/mereDITZy/bmwreel.jpg

"imitation is the greatest form of flattery"
Appreciate 0
      08-16-2007, 08:43 AM   #16
Garrett
Banned
16
Rep
1,356
Posts

 
Drives: 2004 330ci
Join Date: Nov 2005
Location: Mich

iTrader: (0)

Replacing...!

I will replace mine with a carbon fiber replica..!
Appreciate 0
      08-16-2007, 09:41 AM   #17
GregW / Oregon
Commander-In-Chief
United_States
136
Rep
7,638
Posts

 
Drives: 2015 M4 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

iTrader: (2)

Garage List
Quote:
Originally Posted by schnell325 View Post
^^^interesting. I wonder if BMW (US/Canada) has this option...
They haven't offered speed delimiting in the US before, at least on the 3-Series. And yes, spoiler deletion will almost certainly be a no cost/no credit option.
__________________

Greg Lake Oswego, Oregon, USA
2015 M4 Coupe - Silverstone/Sakhir/CF
2012 ML350
Appreciate 0
      08-16-2007, 09:44 AM   #18
jpm3
Private
0
Rep
69
Posts

 
Drives: (sold) 02 E46 M3 Avus Blau
Join Date: Nov 2006
Location: O-Town, FL

iTrader: (0)

Quote:
Originally Posted by Garrett View Post
Replacing...!

I will replace mine with a carbon fiber replica..!
Could this be similar to the current E46 CSL, one piece CF...
__________________
Sold - 2002 E46 M3 Avus Blue
Appreciate 0
      08-16-2007, 10:28 AM   #19
gtb75
Private
gtb75's Avatar
1
Rep
95
Posts

 
Drives: 2006 Corvette Z06
Join Date: Jan 2007
Location: IL, USA

iTrader: (0)

As much as I don't like the look, I'll probably end up keeping it... I'd guess the M3 front clip generates additional downforce, so I'm guessing the rear lip spoiler is there to keep things equal.
__________________
2006 Corvette Z06
Black / Ebony - 459RWHP / 438RWTQ

2005 Subaru Legacy 2.5 GT Wagon
Brilliant Silver / Tweed M5 - 229AWHP / 260AWTQ
Appreciate 0
      08-16-2007, 11:35 AM   #20
GregW / Oregon
Commander-In-Chief
United_States
136
Rep
7,638
Posts

 
Drives: 2015 M4 Coupe, 2012 ML350
Join Date: Nov 2005
Location: Lake Oswego, OR

iTrader: (2)

Garage List
M3 spoiler

Quote:
Originally Posted by gtb75 View Post
As much as I don't like the look, I'll probably end up keeping it... I'd guess the M3 front clip generates additional downforce, so I'm guessing the rear lip spoiler is there to keep things equal.
It's to minimize the Caonda effect. It reduces drag and maybe slightly uplift. It's too small to produce downforce.

But, it should have a slight effect on mileage at speed and top speed. Henri Coanda was an Italian aerodynamacist that discovered this. See pages 137 - 138 of the 7/01 Road & Track. There's a diagram of a spoiler exactly like the M3s showing the effect.

See also: http://en.wikipedia.org/wiki/Coanda_Effect
__________________

Greg Lake Oswego, Oregon, USA
2015 M4 Coupe - Silverstone/Sakhir/CF
2012 ML350
Appreciate 0
      08-16-2007, 12:52 PM   #21
lucid
Major General
lucid's Avatar
United_States
116
Rep
8,034
Posts

 
Drives: E30 M3; Expedition
Join Date: Apr 2007
Location: USA

iTrader: (0)

Quote:
Originally Posted by GregW / Oregon View Post
It's to minimize the Caonda effect. It reduces drag and maybe slightly uplift. It's too small to produce downforce.

But, it should have a slight effect on mileage at speed and top speed. Henri Coanda was an Italian aerodynamacist that discovered this. See pages 137 - 138 of the 7/01 Road & Track. There's a diagram of a spoiler exactly like the M3s showing the effect.

See also: http://en.wikipedia.org/wiki/Coanda_Effect
Yep, there is no way that little plastic spoiler can create significant downforce; little surface area and not a structural component. It's mainly there to manage the flow. Turbulance/undesired pressure differences are not good things in general unless you are young and stupid like I was 15 years ago and got a kick out of riding a bicycle behind trucks at 120kph on highways.
Appreciate 0
      08-16-2007, 01:01 PM   #22
gtb75
Private
gtb75's Avatar
1
Rep
95
Posts

 
Drives: 2006 Corvette Z06
Join Date: Jan 2007
Location: IL, USA

iTrader: (0)

Cool info - definitely didn't know that... I thought it would be similar to what a Gurney Flap does, but in looking at Coanda info, you're probably right. Here's some Gurney Flap info for those who aren't familiar with the tech: http://www.insideracingtechnology.com/tech104gurney.htm and http://www.allamericanracers.com/gurney_flap.html

Either way, I'm sure it's a functional piece which BMW didn't just put there for looks, so I won't be removing it
__________________
2006 Corvette Z06
Black / Ebony - 459RWHP / 438RWTQ

2005 Subaru Legacy 2.5 GT Wagon
Brilliant Silver / Tweed M5 - 229AWHP / 260AWTQ
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
Forum Jump


All times are GMT -5. The time now is 07:12 PM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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