BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      05-06-2010, 02:46 PM   #1
bmw13
Captain
bmw13's Avatar
United_States
102
Rep
677
Posts

Drives: 1M - GIAC:S2
Join Date: Jul 2009
Location: Boca Raton, FL

iTrader: (0)

Question 26.5 just right? not enough? or 28 too stiff? enough?

i am on stock suspension, i have 235 up front and 255 in the rear, is the 28mm bar too stiff for my setup, i dont want to make the wrong decision, thanks in advance. ps. really do respect you guys who know your stuff, liking the answers with solid explanation and reasoning to support
__________________
Follow my car/ life via Instagram @rdauito
2011 E82 1M #215 of 740
http://www.1addicts.com/forums/showthread.php?t=877009
Appreciate 0
      05-06-2010, 02:49 PM   #2
rsjean
satch
rsjean's Avatar
United_States
39
Rep
1,040
Posts

Drives: 135i
Join Date: Dec 2009
Location: Sonoran Desert, Tucson AZ

iTrader: (3)

If you want answers appropriate to you...

...define just right, not enough, and too stiff.
__________________

"The Dingo ate your Mustang"
Appreciate 0
      05-06-2010, 02:49 PM   #3
rsjean
satch
rsjean's Avatar
United_States
39
Rep
1,040
Posts

Drives: 135i
Join Date: Dec 2009
Location: Sonoran Desert, Tucson AZ

iTrader: (3)

If you want answers appropriate to you...

...define just right, not enough, and too stiff.

My 32 is just right - for me.
__________________

"The Dingo ate your Mustang"
Appreciate 0
      05-06-2010, 03:07 PM   #4
bmw13
Captain
bmw13's Avatar
United_States
102
Rep
677
Posts

Drives: 1M - GIAC:S2
Join Date: Jul 2009
Location: Boca Raton, FL

iTrader: (0)

when reading over post install reviews i have seen that people say that the 28mm bar may just be too thick someone not too long ago said this: The downside is that it really doesn't add any extra sense of 'grip' and I notice the soft springs/dampers even more than before. Making quick transitions is actually a bit unnerving. The springs compress, but then the stiffer bar seems to 'catch' the roll and stop it, but the whole experience doesn't feel balanced. I guess that is the issue in a nutshell, adding the stiffer bar has unbalanced the ride slightly. --- would adding the 26.5 bar make this just right, or is this accurate and is the 28mm just maybe a little too thick for stock 135i suspension?
__________________
Follow my car/ life via Instagram @rdauito
2011 E82 1M #215 of 740
http://www.1addicts.com/forums/showthread.php?t=877009

Last edited by bmw13; 05-06-2010 at 03:12 PM..
Appreciate 0
      05-06-2010, 04:48 PM   #5
arrutled
Colonel
arrutled's Avatar
103
Rep
2,474
Posts

Drives: Olsa
Join Date: Jun 2008
Location: Western Mass

iTrader: (0)

the idea behind controlling roll is to prevent positive camber on your tires during cornering. neither one of these bars is stiff enough to do that with stock camber. youll need a pyrometer to test this for yourself though. the 28 mm bar is actually 26.5 mm between the bushings as well. I doubt its actually much stiffer than the 26.5 bar. I would not be worried about too stiff with either one. you also dont want to make a decision based on one person whom you dont know. many people have ordered and loved the 28 mm bar.
__________________

AW 135i w/ blackette, performance short shift kit, BMW alarm, Performance rotors, APEX ARC-8 wheels, Direzza Star Spec 235/275, Dinan stage 3 suspension, M3 wishbones/tension rods/front sway/rear subframe bushings and thats all folks!
Appreciate 0
      05-06-2010, 06:18 PM   #6
m 135
Second Lieutenant
m 135's Avatar
Australia
25
Rep
289
Posts

Drives: Gtr,135i,M235i,XR6 turbo
Join Date: May 2009
Location: Perth,Australia.

iTrader: (1)

Your bar can never be too thick or stiff
Appreciate 0
      05-07-2010, 06:10 AM   #7
tgxmike
Second Lieutenant
tgxmike's Avatar
United_States
18
Rep
293
Posts

Drives: '21 M2C 6MT, '21 Charger Scat
Join Date: Feb 2010
Location: Boise, ID

iTrader: (0)

Garage List
2021 BMW M2  [0.00]
You really should start with a full shock/spring or coilover suspension upgrade first and then add a sway bar later to fine tune your system. This is much more expensive, but for a significantly better ride and grip, especially when on a track, this is the way to go.
Appreciate 0
      05-07-2010, 07:49 AM   #8
bmw13
Captain
bmw13's Avatar
United_States
102
Rep
677
Posts

Drives: 1M - GIAC:S2
Join Date: Jul 2009
Location: Boca Raton, FL

iTrader: (0)

thanks guys, appreciate the help
__________________
Follow my car/ life via Instagram @rdauito
2011 E82 1M #215 of 740
http://www.1addicts.com/forums/showthread.php?t=877009
Appreciate 0
      05-07-2010, 08:07 AM   #9
Mark M
Major
Mark M's Avatar
United_States
240
Rep
1,288
Posts

Drives: E30M3 E83X3 E90335D
Join Date: Aug 2007
Location: Lancaster, PA

iTrader: (0)

I have never been a fan of using stiff bars to compensate for weak springs.

Personally, I'd rather run the OE bar and do it right by changing spring rates and damper rates.

Get a good set of coilovers and you'll be impressed. Shop TC Kline or Ground Control and run linear rate springs.

I use to run really stiff bars and H&R springs on my E30. Hated it. The bars were so noisy and really took away from the independent suspension. Not to mention all the new chassis fatigue stiff bars will contribute to.

Just my two cents.
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 09:28 AM.




1addicts
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