E90Post
 


MINHS Auto Care Center
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Koni FSD or Adjustable?



Reply
 
Thread Tools Search this Thread
      07-12-2008, 09:25 PM   #1
TMack
Road Warrior
 
Drives: '08 535xi AT
Join Date: Jul 2008
Location: Kansas City

Posts: 110
iTrader: (0)

Koni FSD or Adjustable?

Adjustable shocks make a lot of sense to me, but it seems most around here are running FSD's. Why?

FYI, I'm looking to mildly lower and firm up my non-sport 330i suspension, but need decent comfort for lots of highway miles.

I'm toying with the idea of H&R Sport springs and Koni adjustables or FSD. Thoughts?

-TMc
TMack is offline   United_States
0
Reply With Quote
      07-13-2008, 08:14 AM   #2
stressdoc
Moderator
 
stressdoc's Avatar
 
Drives: 335 E90 ZSP+
Join Date: Jun 2005
Location: MO

Posts: 9,837
iTrader: (0)

Getting a used ZSP set might be an option.
__________________
My not-so-recent ED: http://www.e90post.com/forums/showthread.php?t=31829
Quaife, BMW Perf & M3 suspension, V5, M-sport, ...
Please join BMWCCA http://bmwcca.org/index.php?pageid=c...&ref_by=300279
stressdoc is offline   Dominica
0
Reply With Quote
      07-13-2008, 10:04 AM   #3
benton0311
Lance Corporal
 
Drives: 08 335i, Graphite
Join Date: Nov 2007
Location: SW Asia/Maryland

Posts: 55
iTrader: (1)

I'm curious about the FSD as well. I've got a 335i Sport and while the stock dampers are decent, I sure wouldn't go out and buy them or even go through the trouble of putting them on.

I ran Koni adjustables on my STi and they were phenominal. Incredible damping and they can handle a huge range of spring rates (literally from stock to custom GC coilover sleeves in your choice of rates). In that situation I actually found them to be more comfortable than the stock struts even though I was running about double the stock spring rates.

Only issue with adjustables is that in order for them to work you have to take the time to properly adjust them. For comfort, this could take a while driving over all the different conditions that you drive in. Just when you think you have them right, you go over a set of railroad tracks or drive in the city and find you need to do some more adjusting. Perfect if you want tinker which for me is all I did in my STi. In my case, I'm looking for set-and-forget parts for my E90 which is why I'm curious about the FSD.

Last edited by benton0311; 07-13-2008 at 10:47 AM.
benton0311 is offline  
0
Reply With Quote
      07-13-2008, 11:59 AM   #4
uberschnell
Brigadier General
 
uberschnell's Avatar
 
Drives: // 135i //, X5
Join Date: Mar 2007
Location: Bay Area

Posts: 3,417
iTrader: (43)

The only problem I had with the FSD's was when I was lowered on eihbach pros springs. I could bottom out the shock on any speed bump. I also think that the springs were underrated for the extra lbs the 335 carries in the front. I've gone back to my zsp springs with the FSD's and it's perfect.
__________________
- 08 135i - Wavetrac LSD, AST 4100, Swift springs, Brembo GT brakes, M3 front sway, Meyle HD links, Dinan Camber plates, Whiteline subframe bushings, M3 rear guide and upper link, M3 front control arms, HP custom M3 front Strut brace, Megan rear control arms, F30 brake shields -
uberschnell is offline   No_Country
0
Reply With Quote
      07-13-2008, 12:01 PM   #5
SV Concepts III
Lieutenant General
 
Drives: BMW Duh
Join Date: Apr 2005
Location: Santa Clara

Posts: 17,022
iTrader: (13)

Send a message via AIM to SV Concepts III
I personally think the FSDs are more than adequate for a sporty upgrade. If you are not going to seriously track the car or are not set on dialing in your own suspension settings, the FSDs will offer a great performance upgrade. The great thing about these shocks is they are very smooth under normal driving conditions and stiffen under cornering to reduce body roll.
SV Concepts III is offline  
0
Reply With Quote
      07-13-2008, 08:36 PM   #6
E90AWMT
Second Lieutenant
 
Drives: AW E90 Sport Premium 6sp MT
Join Date: Nov 2007
Location: Miami

Posts: 208
iTrader: (4)

I just installed the H&R Touring Cup Kit on my 335i sedan. It lowered the car just a bit and the ride is slightly firmer than my stock sport suspension. I was debating the same think you were not too long ago and I think that i made the right decision. There is a post where the title is H&R Touring cup kit with 3 pages and in the last page I posted pics. This set up is great. nothing but good things about it.

cheers
E90AWMT is offline  
0
Reply With Quote
      07-14-2008, 02:10 AM   #7
Gen_E92
Brigadier General
 
Drives: slow
Join Date: Oct 2006
Location: Vancouver

Posts: 3,386
iTrader: (17)

Garage List
2007 335i  [3.90]
if you go with FSD then try to get a set of used zsp springs...eibach prokit SUCK performance wise.
Gen_E92 is offline   Japan
0
Reply With Quote
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 03:33 PM.




e90post
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