New 2009 2010 BMW Z4 - ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   New 2009 2010 BMW Z4 - ZPOST > BMW Z4 Forum (E89) > 2009-Current Z4 Forum (E89) General Discussion

Post Reply
 
Thread Tools Search this Thread
      03-28-2013, 09:56 AM   #1
BugsBunny
Private
United_States
4

 
Drives: 2009 Z4 3.5i, 2015 BMW X3 2.8i
Join Date: Dec 2010
Location: Dallas, Texas


Posts: 73
iTrader: (0)

is BMW OEM wind deflector really reduces air turbulence ?

Hi, am looking into buying the BMW OEM wind deflector. My SA (who owned a Z4) warned me about the effectiveness of the wind deflector. He told me that it does not bring much difference in terms of turbulence inside the cockpit while costing approx $500.... I plan to use it mostly on the highway (75-85mph).

I guess I am looking at some feedback from you guys. Thanks.
Appreciate 0
      03-28-2013, 10:16 AM   #2
tranquility
sportscars only
Canada
75

 
tranquility's Avatar
 
Drives: 2011 Z4 sDrive 35i
Join Date: Aug 2007
Location: Toronto


Posts: 1,496
iTrader: (0)

I got the deflector as part of the 'Executive Pkg' here in Canada. It has a noticeable effectiveness vs w/o one but not sure if it is worth $500 to get it as a standalone.
Appreciate 0
      03-28-2013, 10:18 AM   #3
ManiacGT
Major
United Kingdom
39

 
ManiacGT's Avatar
 
Drives: Z4 sDrive 35i
Join Date: Jan 2011
Location: Manchester, UK


Posts: 1,333
iTrader: (0)

Send a message via MSN to ManiacGT
It does work... but I really only feel the difference over 60mph...
__________________
Black Sapphire BMW Z4 sDrive35i Mods: HiFi Tweeters Stubby LED Halos & Front Indicators DVDInMotion SmartTop 313 BMW Performance Alloys LCI Repeaters http://goo.gl/PF4nSz
Appreciate 0
      03-28-2013, 10:55 AM   #4
morfinx
Shenanigans
United_States
51

 
morfinx's Avatar
 
Drives: E89 Z4 sDrive35i
Join Date: Jul 2010
Location: Austin, TX


Posts: 1,231
iTrader: (0)

At highway speed you'll feel it. With it on and the windows up, I can still have a normal conversation with the passenger without shouting at 80mph.

One annoying thing is that it darkens the rear view. So if you have tint on the rear window and the top is up, it makes the rear view too dark. That is to say, I only put it on when I have the top down AND plan to drive on the highway.
__________________
E89 Z4 sDrive35i 7DCT "Zayna", Alpine White/Coral Red
E92 335i 6MT "Calixta", Space Grey/Coral Red [Retired]

Appreciate 0
      03-28-2013, 11:05 AM   #5
morfinx
Shenanigans
United_States
51

 
morfinx's Avatar
 
Drives: E89 Z4 sDrive35i
Join Date: Jul 2010
Location: Austin, TX


Posts: 1,231
iTrader: (0)

You might look into this one as well:

http://www.roadstersolutions.com/page69.html

Not OEM, but it's clear so it doesn't darken the rear view, and it's a lot cheaper.
__________________
E89 Z4 sDrive35i 7DCT "Zayna", Alpine White/Coral Red
E92 335i 6MT "Calixta", Space Grey/Coral Red [Retired]

Appreciate 0
      03-28-2013, 11:18 AM   #6
jparnes1
Lieutenant Colonel
No_Country
39

 
jparnes1's Avatar
 
Drives: 2006 525xi, 2012 Z4 35i
Join Date: Jan 2010
Location: Rochester, NY


Posts: 1,775
iTrader: (0)

Def helps reduce wind turbulence. You can get a better price from one of the dealers that offer discounts, like www.bmwmercedesparts.com. Probably 25% less.
__________________
2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, ///M Sport, CW, PP, PS, NAV, CA, LED Angel Eyes, red calipers, pedal covers, stubby antenna, Luxon strut bar, CF engine cover, LCI side markers, Extra Enjoyment Package.
Appreciate 0
      03-29-2013, 03:45 PM   #7
BMWZ4RIDER
BMWZ4Rider
United_States
24

 
BMWZ4RIDER's Avatar
 
Drives: 2009 BMW Z4 35i
Join Date: Dec 2012
Location: Cape Cod, MA


Posts: 682
iTrader: (0)

I have the BMW OEM Deflector installed. Went for 80 MPH ride on the highway Top down today and with the windows down and the deflector in place the wind and notice is acceptable. Put the window and and at 80 MPH, the reduction in wind and noise is excellent with the deflector. This was my 1st real test paying attention to the wind and noise, top down. I would recommend the deflector.
__________________
2009 BMW Z4 35i/SMG/DCT/Premium,Cold, Sound PK/Com Acc/Ash/PDC/Wind Deflector/Smoked Reflectors/Red Calipers/Cl Mask/M Series Grill/6000K LED's/De-Badged/M Pedals/CF Mirrors/Stubby/20% Tint/H8 LED's/LCI Side Markers/Super Sprint Spoiler/VMR V710
Appreciate 0
      03-29-2013, 04:48 PM   #8
TitanTim
Private
2

 
Drives: BMW Z4 sDrive 2.0 M Sport
Join Date: May 2012
Location: United Kingdom


Posts: 86
iTrader: (0)

I have the Roadster Solutions deflector and very pleased with it







Tim.
__________________
Appreciate 0
      03-29-2013, 05:01 PM   #9
jparnes1
Lieutenant Colonel
No_Country
39

 
jparnes1's Avatar
 
Drives: 2006 525xi, 2012 Z4 35i
Join Date: Jan 2010
Location: Rochester, NY


Posts: 1,775
iTrader: (0)

I used a solid deflector like the roadster solutions one and my experience was not good. the problem is that at highway speeds, the air coming over the windshield hits the deflector and bounces back into the cabin. On cool days I was always getting cold air blowing on the back of my head and neck. The OEM version is mesh which lets much of the air through.
__________________
2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, ///M Sport, CW, PP, PS, NAV, CA, LED Angel Eyes, red calipers, pedal covers, stubby antenna, Luxon strut bar, CF engine cover, LCI side markers, Extra Enjoyment Package.
Appreciate 0
      03-29-2013, 05:24 PM   #10
TitanTim
Private
2

 
Drives: BMW Z4 sDrive 2.0 M Sport
Join Date: May 2012
Location: United Kingdom


Posts: 86
iTrader: (0)

Quote:
Originally Posted by jparnes1 View Post
I used a solid deflector like the roadster solutions one and my experience was not good. the problem is that at highway speeds, the air coming over the windshield hits the deflector and bounces back into the cabin. On cool days I was always getting cold air blowing on the back of my head and neck. The OEM version is mesh which lets much of the air through.
I didn't go OEM as it looks fugly

Tim.
__________________
Appreciate 0
      03-29-2013, 06:47 PM   #11
tranquility
sportscars only
Canada
75

 
tranquility's Avatar
 
Drives: 2011 Z4 sDrive 35i
Join Date: Aug 2007
Location: Toronto


Posts: 1,496
iTrader: (0)

Quote:
Originally Posted by TitanTim View Post
I didn't go OEM as it looks fugly

Tim.
No it doesn't.

...and it's really telling why BMW wouldn't do a clear/plastic deflector, seems like a no-brainer to do that, but, obviously it's for effectiveness and safety issues that they went w/ the mesh.
Appreciate 0
      03-29-2013, 07:40 PM   #12
CeEl
First Lieutenant
United_States
12

 
Drives: not too bad
Join Date: Sep 2009
Location: Chicago, IL


Posts: 311
iTrader: (0)

My car came with the wind screen, but the dealer didn't install it. Wondering if it is as useful for speeds below highway-speeds?
Appreciate 0
      03-29-2013, 07:53 PM   #13
STOOF
Captain
United_States
14

 
STOOF's Avatar
 
Drives: '13 535i 6MT
Join Date: Jul 2009
Location: Staten Island, NY


Posts: 625
iTrader: (2)

Garage List
2013 BMW 535i  [0.00]
i just sold mine a few days ago and i must say putting the top down the last few days without it sucks lol
__________________
2013 535i 6MT ///MSport - Alpine White/Cinnamon Brown
2011 Z4 - Retired
Appreciate 0
      03-29-2013, 09:05 PM   #14
jparnes1
Lieutenant Colonel
No_Country
39

 
jparnes1's Avatar
 
Drives: 2006 525xi, 2012 Z4 35i
Join Date: Jan 2010
Location: Rochester, NY


Posts: 1,775
iTrader: (0)

Where you been Stoof? Long time no hear! Thought you might have sold your Z
__________________
2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, ///M Sport, CW, PP, PS, NAV, CA, LED Angel Eyes, red calipers, pedal covers, stubby antenna, Luxon strut bar, CF engine cover, LCI side markers, Extra Enjoyment Package.
Appreciate 0
      03-30-2013, 05:07 AM   #15
juhap
Lieutenant
Finland
12

 
juhap's Avatar
 
Drives: sDrive35i
Join Date: Jun 2009
Location: Finland


Posts: 530
iTrader: (0)

Quote:
Originally Posted by TitanTim View Post
I didn't go OEM as it looks fugly
It's a matter of opinion of course.

Just because I think any solution involving double-side tape or suction cups makes a car look cheap, doesn't mean it's a fact
Appreciate 0
      03-30-2013, 05:31 AM   #16
TitanTim
Private
2

 
Drives: BMW Z4 sDrive 2.0 M Sport
Join Date: May 2012
Location: United Kingdom


Posts: 86
iTrader: (0)

Quote:
Originally Posted by tranquility View Post
No it doesn't.

...and it's really telling why BMW wouldn't do a clear/plastic deflector, seems like a no-brainer to do that, but, obviously it's for effectiveness and safety issues that they went w/ the mesh.
Yes its a no brainer that I can see clearly when reversing
__________________
Appreciate 0
      03-30-2013, 05:36 AM   #17
TitanTim
Private
2

 
Drives: BMW Z4 sDrive 2.0 M Sport
Join Date: May 2012
Location: United Kingdom


Posts: 86
iTrader: (0)

Quote:
Originally Posted by juhap View Post
It's a matter of opinion of course.

Just because I think any solution involving double-side tape or suction cups makes a car look cheap, doesn't mean it's a fact
Your correct and my opinion is the OEM deflector looks ugly and not in keeping with the rest of the car. I didn't say it makes the car look cheap

With regard to double sided tape and suction cups, I've had no problems with the Roadster Solutions deflector at high speeds, it looks great, safety wise you can see through it whilst reversing etc, plus its not a rip off price compared to OEM for the simple job it does.

__________________
Appreciate 0
      03-30-2013, 01:31 PM   #18
tranquility
sportscars only
Canada
75

 
tranquility's Avatar
 
Drives: 2011 Z4 sDrive 35i
Join Date: Aug 2007
Location: Toronto


Posts: 1,496
iTrader: (0)

Quote:
Originally Posted by TitanTim View Post


Yes its a no brainer that I can see clearly when reversing
Unless one is visually-impaired, one can easily see through the mesh. I'm pretty sure that the BMW engineers know what they are doing. There is no glare at all unlike some plastic thingy.

Like I said, it should have been a no-brainer to put something clear and non-mesh as a deflector, so the very fact said engineers decided to go the opposite route and use something else, i.e. the OEM one, means that such clear/non-mesh method is not as effective and/or safe.

Also, not sure how easily-removable these aftermkt deflectors are, that is another consideration. Don't want something glued there permanently esp during cold weather when top-down is not appropriate.
Appreciate 0
      03-30-2013, 03:24 PM   #19
TitanTim
Private
2

 
Drives: BMW Z4 sDrive 2.0 M Sport
Join Date: May 2012
Location: United Kingdom


Posts: 86
iTrader: (0)

Quote:
Originally Posted by tranquility View Post
Unless one is visually-impaired, one can easily see through the mesh. I'm pretty sure that the BMW engineers know what they are doing. There is no glare at all unlike some plastic thingy.

Like I said, it should have been a no-brainer to put something clear and non-mesh as a deflector, so the very fact said engineers decided to go the opposite route and use something else, i.e. the OEM one, means that such clear/non-mesh method is not as effective and/or safe.

Also, not sure how easily-removable these aftermkt deflectors are, that is another consideration. Don't want something glued there permanently esp during cold weather when top-down is not appropriate.
I'm not sure they did when designing it as they forgot to design something more in keeping with the rest of the car Unless you have x-ray vision its impaired which ever way you look at it. For me personally the clear deflector is a much better solution. As for removing it simples, it just slides out but then you would hardly need to as opposed to the OEM deflector which looks better folded out the way. Anyways this is going off topic, I'm sure some prefer OEM whilst others prefer a better solution.
__________________
Appreciate 0
      03-30-2013, 09:12 PM   #20
tranquility
sportscars only
Canada
75

 
tranquility's Avatar
 
Drives: 2011 Z4 sDrive 35i
Join Date: Aug 2007
Location: Toronto


Posts: 1,496
iTrader: (0)

^It's not impaired at all unless your eyes are wracked...and as to the 'better' way, it's definitely not the clear/plastic thingy for effectiveness and safety issues, rather, it's still OEM, like it or not.
Appreciate 0
      03-30-2013, 09:15 PM   #21
zibawal
Major
United_States
18

 
Drives: 2012 X5D
Join Date: Aug 2006
Location: SFO BAY AREA


Posts: 1,059
iTrader: (0)

is it retractable?
Appreciate 0
      03-30-2013, 09:34 PM   #22
tranquility
sportscars only
Canada
75

 
tranquility's Avatar
 
Drives: 2011 Z4 sDrive 35i
Join Date: Aug 2007
Location: Toronto


Posts: 1,496
iTrader: (0)

Quote:
Originally Posted by zibawal View Post
is it retractable?
No, remove by hand.
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 07:22 PM.




zpost
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