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 > Suspension | Brakes | Chassis
 
GT Haus
Post Reply
 
Thread Tools Search this Thread
      12-14-2013, 12:12 AM   #1
0_to_60
First Lieutenant
 
0_to_60's Avatar
 
Drives: E92 M3
Join Date: Jul 2011
Location: LA, CA

Posts: 350
iTrader: (0)

Need advice: Car sways side to side on sudden acceleration

As the title says, doesnt matter what speed it is. It feels like a fwd torque steer. It happens when step on the gas hard the car kind of moves side to side, like it sways.
I checked motor mounts by gas and brake method and couldnt find anything wrong. Also checked tire pressures their good. A local mechanic and i jacked up the car and we couldnt find anything wrong by wiggle suspesion parts, wheels and etc
What can be the culprit?
0_to_60 is offline  
0
Reply With Quote
      12-14-2013, 02:11 AM   #2
rsv4dan
Private
 
Drives: E92 M3 6MT Sparkling Graphite
Join Date: Jun 2013
Location: Brisbane

Posts: 91
iTrader: (0)

Alignment? Excessive toe out on the rear could possibly cause this.
rsv4dan is offline   Australia
0
Reply With Quote
      12-14-2013, 02:41 AM   #3
0_to_60
First Lieutenant
 
0_to_60's Avatar
 
Drives: E92 M3
Join Date: Jul 2011
Location: LA, CA

Posts: 350
iTrader: (0)

Quote:
Originally Posted by rsv4dan View Post
Alignment? Excessive toe out on the rear could possibly cause this.
this is what i thought initially, but it was done 6 months ago. I guess LA streets might of toed out

Better to explain the problem, when i hit the gas and im holding the steering wheel straight the body of the car feels like it sway from side to side but the steering wheel is straight and centered in my hands
0_to_60 is offline  
0
Reply With Quote
      12-15-2013, 11:44 PM   #4
MFKN3
Colonel
 
MFKN3's Avatar
 
Drives: 4.5L stroker s/c E92 M3
Join Date: Nov 2008
Location: Australia

Posts: 2,011
iTrader: (2)

Sounds like alignment to me too
MFKN3 is offline   Australia
0
Reply With Quote
      12-16-2013, 01:33 AM   #5
White 13
Private First Class
 
Drives: A 2013 Alpine White E92
Join Date: Oct 2012
Location: N Cal

Posts: 133
iTrader: (0)

Could it be the limited slip working?
White 13 is offline  
0
Reply With Quote
      12-16-2013, 02:35 AM   #6
0_to_60
First Lieutenant
 
0_to_60's Avatar
 
Drives: E92 M3
Join Date: Jul 2011
Location: LA, CA

Posts: 350
iTrader: (0)

well if it was an alignment issue, wouldnt it pull all the time? it only happens when i floor it.
Im running 255/275 35 pss tires on stock edc non zcp suspension. I have 15mm spacers all around and have no muffler in the rear, just straight pipe
0_to_60 is offline  
0
Reply With Quote
      12-16-2013, 10:55 AM   #7
Malek@MRF
BimmerPost Supporting Vendor

 
Malek@MRF's Avatar
 
Drives: E92 M3, E30, F30
Join Date: Jan 2008
Location: Irvine, California

Posts: 3,372
iTrader: (5)

Send a message via AIM to Malek@MRF
Not enough rear toe in for the alignment and possibly too much negative camber.
__________________

BMW PERFORMANCE SPECIALISTS. Suspension. Forced Induction. Brakes. Race Preparation. Service. Alignments.
OFFICIAL PARTNERS: Íhlins. KW Suspension. Brembo. AP Racing. ESS Tuning. iND Distribution. Turner Motorsport.
Facebook | Instagram | Yelp! | Flikr | Contact | YouTube
Malek@MRF is offline   United_States
0
Reply With Quote
      01-05-2014, 05:34 AM   #8
0_to_60
First Lieutenant
 
0_to_60's Avatar
 
Drives: E92 M3
Join Date: Jul 2011
Location: LA, CA

Posts: 350
iTrader: (0)

Quote:
Originally Posted by Malek@MRF View Post
Not enough rear toe in for the alignment and possibly too much negative camber.
sorry for the late response and thanks for the reply Malek. I have 255/275/35 pss tires on stock edc suspension running on 220s. What would be the proper psi numbers front and back and negative camber for the rear? thanks!
Note for street setup only
0_to_60 is offline  
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 07:27 AM.




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