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
      01-14-2013, 05:16 PM   #1
1BimmerNut
Private First Class
 
1BimmerNut's Avatar
 
Drives: 135i that turned into a 130i
Join Date: Sep 2012
Location: Sydney, Australia

Posts: 135
iTrader: (0)

Squirmy rear end

When cornering -
I feel a bit of movement in the rear when cornering and getting on the gas (progressively) . Its much better post the Michelin PSS upgrade. But wondering if you guys get this too. I am no mechanic but would it be soft bushes in the rear? Or the e-diff biting? Tyre pressures are 38 psi.
Do you guys notice the squirmy rear under power??
1BimmerNut is offline   Australia
0
Reply With Quote
      01-14-2013, 05:26 PM   #2
Jeef Beef
Lord Captain Commander
 
Jeef Beef's Avatar
 
Drives: a sleeper
Join Date: Oct 2009
Location: Sydney, Australia

Posts: 3,089
iTrader: (0)

With 400nm going through the rear on a short wheelbase car like the 1er which has a non-mechanical ediff, you're going to have a unsettled rear if you're powering out of a corner.

Just wait till you add more power on the thing.
__________________

E82 135i M-sport: SGM/6MT/Black
Jeef Beef is offline   Australia
0
Reply With Quote
      01-14-2013, 06:32 PM   #3
pavo335
Banned
 
pavo335's Avatar
 
Drives: 3.5 wheeler
Join Date: Feb 2012
Location: sydney

Posts: 2,981
iTrader: (0)

squirmy???? Hell Yes! need to do a full m3 rear replacement
pavo335 is offline  
0
Reply With Quote
      01-14-2013, 09:23 PM   #4
Eddie135
N55 Commando
 
Eddie135's Avatar
 
Drives: 135i - DCT - N55
Join Date: Jul 2011
Location: Melbourne

Posts: 753
iTrader: (0)

Send a message via MSN to Eddie135
Just changed the 4 rear sub-frame bushes to M3 ones, this will solve your unsettled rear movement.
Eddie135 is offline   Australia
0
Reply With Quote
      01-14-2013, 09:48 PM   #5
1BimmerNut
Private First Class
 
1BimmerNut's Avatar
 
Drives: 135i that turned into a 130i
Join Date: Sep 2012
Location: Sydney, Australia

Posts: 135
iTrader: (0)

Ok that sorted it then?

Quote:
Originally Posted by Eddie135 View Post
Just changed the 4 rear sub-frame bushes to M3 ones, this will solve your unsettled rear movement.
Thanks for that tip.....Thinking it could be bushes - Can you tell me where you got them? Any downside like Noise / Vibration?

Had a quick Google and found this among a heap of other articles on upgrading

http://imbmparts.com/2012/07/17/135i...onmprovements/

Last edited by 1BimmerNut; 01-14-2013 at 10:09 PM.
1BimmerNut is offline   Australia
0
Reply With Quote
      01-14-2013, 10:41 PM   #6
Peter@Advan
 
Peter@Advan's Avatar
 
Drives: 335 coupe ADVAN
Join Date: May 2011
Location: Sydney

Posts: 1,359
iTrader: (0)

135/335 rear end

The fix for this issue is to go to the M3 bush system great for a road car on road tyres.
But if you are doing track days and semi slicks go for the soild bush set up from Turner Motor Sport, at the same time go with the M3 arms or for track cars use the Megan arms.

Or if you can find one go the complete M3 rear with LSD and go from there, the sky is the limit with these cars

We have done many differant setups if i can help just give Peter a ring at Advan Performance
Peter@Advan is offline   Australia
0
Reply With Quote
      01-15-2013, 01:50 AM   #7
gazz
///Mbassador
 
gazz's Avatar
 
Drives: The horse I fell off
Join Date: Apr 2007
Location: Gold Coast Australia

Posts: 1,077
iTrader: (0)

Have you just changed from run flats? The standard suspension is tuned for the stiffer walled RFT tyres. I noticed squirmy bum syndrome with my 335i when I changed over.
gazz is offline   Australia
0
Reply With Quote
      01-15-2013, 02:05 AM   #8
Ian///M
Major General
 
Ian///M's Avatar
 
Drives: 1M
Join Date: Mar 2011
Location: AU

Posts: 6,256
iTrader: (0)

Normal for a 135i suspension. Try running at 34psi rear, 36 front. As others said, M3 bushes and consider an M3 FSB
__________________
BMW 1M VO - Cobb + PTF e-Tune, Akrapovic wireless, MadDad mids, ETS 5" FMIC, ER CP, TurboSmart PB DV's, SSK, CDV, OCC, AWRON Gauge, Hankook RS-3's, Vorshlag Camber plates
Ian///M is offline   No_Country
0
Reply With Quote
      01-15-2013, 05:37 PM   #9
Dackelone
Moderator
 
Dackelone's Avatar
 
Drives: 135i Silber mit/Rot 6MT N54
Join Date: Feb 2010
Location: Bayern, Germany

Posts: 16,382
iTrader: (1)

Quote:
Originally Posted by skycat View Post
The fix for this issue is to go to the M3 bush system great for a road car on road tyres...
+1.

OP the way you describe whats going on is how my car felt. The rear end felt as though it was held in place by rubber bands. Anytime you simply thought about getting on the power in mid turn... and the rear end would do funny stuff. It got real annoying, real fast. And I hated having to doge pot holes and man hole covers - bc the rear end would wag after you went over those.

I only changed my rear suspension bushing and upgraded to the M3 ones. I could not be happier. I even think the front end works much better now. The rear stays planted and never steps out or wags or wiggles when you get on the power in mid turn. The entire car feels MUCH more solid now.
Dackelone is offline   Germany
0
Reply With Quote
      01-15-2013, 06:34 PM   #10
TS135i
piggy in the mirror
 
Drives: 2013 6MT 135i
Join Date: Jan 2013
Location: Sydney

Posts: 433
iTrader: (0)

Quote:
Originally Posted by skycat View Post
The fix for this issue is to go to the M3 bush system great for a road car on road tyres.
Is it worth doing just the rear on a 135i 2013 model? even though I haven't yet taken delivery I KNOW this will annoy me. I'll be using RFT until they wear, then I'll throw on some proper tyres.. I've already ordered a new clutch line Lock Valve and performed the mod waiting for install I blame this forum.
__________________
135i Coupe N55 PPK
TS135i is offline   Australia
0
Reply With Quote
      01-15-2013, 08:56 PM   #11
Wrniknbl
It's just not cricket
 
Wrniknbl's Avatar
 
Drives: 135i N55
Join Date: Jul 2012
Location: Aus

Posts: 75
iTrader: (0)

Save your coin and do the entire rear end M3 upgrade whilst the subframe is out. 8 hours of labour or so to replace some rubber bushings doesn't make sense to me.
Wrniknbl is offline   Australia
0
Reply With Quote
      01-15-2013, 08:58 PM   #12
TS135i
piggy in the mirror
 
Drives: 2013 6MT 135i
Join Date: Jan 2013
Location: Sydney

Posts: 433
iTrader: (0)

Quote:
Originally Posted by Wrniknbl View Post
Save your coin and do the entire rear end M3 upgrade whilst the subframe is out. 8 hours of labour or so to replace some rubber bushings doesn't make sense to me.
well noted
__________________
135i Coupe N55 PPK
TS135i is offline   Australia
0
Reply With Quote
      01-15-2013, 11:04 PM   #13
beemer
force fed Member
 
beemer's Avatar
 
Drives: BSM 1M
Join Date: Jul 2008
Location: sydney

Posts: 1,034
iTrader: (0)

Quote:
Originally Posted by 1BimmerNut View Post
When cornering -
I feel a bit of movement in the rear when cornering and getting on the gas (progressively) . Its much better post the Michelin PSS upgrade. But wondering if you guys get this too. I am no mechanic but would it be soft bushes in the rear? Or the e-diff biting? Tyre pressures are 38 psi.
Do you guys notice the squirmy rear under power??

both you guys should consider putting KW V3 on your car, totally transforms the car, the ride height, and the comfort. Best thing to ever happen to my old 135i. Quite easy to wind out for a track day and back off for the city. Put just a little camber on the front wheels.

don't bother with the DDC option.
beemer is offline   Australia
0
Reply With Quote
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 11:14 AM.




1addicts
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