BMW X5 and X6 Forum 2014-Current
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Post Reply
 
Thread Tools Search this Thread
      07-13-2018, 10:15 AM   #1
Cabrio330
Private
United_States
13
Rep
88
Posts

Drives: 2017 M240i F23
Join Date: Feb 2012
Location: Dallas, TX

iTrader: (1)

Suspension/Alignment (?) Troubleshooting Question

Any advice is greatly appreciated! I have a 2015 X5 xDrive35i with M Sport Package (337) and Adaptiv M Suspension (2VF), with 56,xxx miles. I purchased this car one year ago with 42,xxx miles.

Often times when driving over the lousy bumpy roads here in Dallas, TX, the car seems to shimmy from side to side horizontally, especially (only?) at the rear. The sensation stands out because I expect up/down movement throughout the entire car, not the side to side movement. It is almost as if the rear of the car is being pushed side to side while the front stays planted.

Does this sound like a suspension issue, or maybe a wheel alignment problem? I am woefully ignorant on these matters.

I will be taking this car in for a check before a long upcoming road trip, I would like to be able to point the mechanic to the potential causes of this issue, rather than merely trusting them 100%.

Hope this makes sense, thanks for any tips or help!
Appreciate 0
      07-14-2018, 11:25 PM   #2
Live4USMC
Private First Class
Live4USMC's Avatar
United_States
25
Rep
101
Posts

Drives: 2014 X5 50i M Sport/2016 340XI
Join Date: Dec 2010
Location: 5280 Feet Above Sea Level

iTrader: (0)

Sounds like your wheels are tracking in pavement grooves. Does it do this on very smooth asphalt?
Appreciate 0
      07-15-2018, 01:53 AM   #3
CatalinP
Lieutenant
221
Rep
439
Posts

Drives: BMW X5 F15 2014 3.0xd
Join Date: Aug 2017
Location: RO

iTrader: (0)

Tramlining.

https://en.wikipedia.org/wiki/Tramlining
Appreciate 0
      07-16-2018, 08:04 PM   #4
Cabrio330
Private
United_States
13
Rep
88
Posts

Drives: 2017 M240i F23
Join Date: Feb 2012
Location: Dallas, TX

iTrader: (1)

Thanks for the responses. It isn't tramlining, which I am familiar with, since it is a temporary phenomenon (1-2 seconds) when driving over bumps. It is hard to describe.

Thanks again!

Last edited by Cabrio330; 07-16-2018 at 08:11 PM.
Appreciate 0
      07-17-2018, 11:49 AM   #5
boyce89976
Private First Class
52
Rep
155
Posts

Drives: 2014 X5 5.0 M Sport
Join Date: Jun 2013
Location: TN

iTrader: (0)

Quote:
Originally Posted by Cabrio330 View Post
Any advice is greatly appreciated! I have a 2015 X5 xDrive35i with M Sport Package (337) and Adaptiv M Suspension (2VF), with 56,xxx miles. I purchased this car one year ago with 42,xxx miles.

Often times when driving over the lousy bumpy roads here in Dallas, TX, the car seems to shimmy from side to side horizontally, especially (only?) at the rear. The sensation stands out because I expect up/down movement throughout the entire car, not the side to side movement. It is almost as if the rear of the car is being pushed side to side while the front stays planted.

Does this sound like a suspension issue, or maybe a wheel alignment problem? I am woefully ignorant on these matters.

I will be taking this car in for a check before a long upcoming road trip, I would like to be able to point the mechanic to the potential causes of this issue, rather than merely trusting them 100%.

Hope this makes sense, thanks for any tips or help!
I had a 335 that did the same thing. While cornering over bumps, as the rear suspension rebounds, it feels like the rear end, but not the rear tires, shifts slightly toward the outside of the corner? Almost like the the car is moving laterally on the suspension.

Do you have run flats installed, or regular tires? I never had it checked, but my theory is that since the suspension compliance is designed for run flats, with regular tires, the sidewalls flexing laterally under rebound is what we're feeling.

That's a pure guess, though.
Appreciate 0
      07-18-2018, 08:40 PM   #6
Cabrio330
Private
United_States
13
Rep
88
Posts

Drives: 2017 M240i F23
Join Date: Feb 2012
Location: Dallas, TX

iTrader: (1)

Quote:
Originally Posted by boyce89976 View Post
I had a 335 that did the same thing. While cornering over bumps, as the rear suspension rebounds, it feels like the rear end, but not the rear tires, shifts slightly toward the outside of the corner? Almost like the the car is moving laterally on the suspension.

Do you have run flats installed, or regular tires? I never had it checked, but my theory is that since the suspension compliance is designed for run flats, with regular tires, the sidewalls flexing laterally under rebound is what we're feeling.

That's a pure guess, though.
That's a good description but with a key difference: this happens to me when traveling over bumps in a straight line! Odd, huh? Which is why I'm thinking it is suspension or alignment related.

I have replaced the tires with non-runflats, so your theory could be correct.

Soon I'll take the car to the dealer or indy for diagnosis. I'm naturally skeptical that they truly know how to assess these issues so keeep the ideas and theories coming!
Appreciate 0
      07-18-2018, 09:46 PM   #7
TOPEC
<3 Flat Four
Canada
67
Rep
460
Posts

Drives: 335is LM Blue
Join Date: Aug 2010
Location: Richmond B.C.

iTrader: (0)

Quote:
Originally Posted by Cabrio330 View Post
Any advice is greatly appreciated! I have a 2015 X5 xDrive35i with M Sport Package (337) and Adaptiv M Suspension (2VF), with 56,xxx miles. I purchased this car one year ago with 42,xxx miles.

Often times when driving over the lousy bumpy roads here in Dallas, TX, the car seems to shimmy from side to side horizontally, especially (only?) at the rear. The sensation stands out because I expect up/down movement throughout the entire car, not the side to side movement. It is almost as if the rear of the car is being pushed side to side while the front stays planted.

Does this sound like a suspension issue, or maybe a wheel alignment problem? I am woefully ignorant on these matters.

I will be taking this car in for a check before a long upcoming road trip, I would like to be able to point the mechanic to the potential causes of this issue, rather than merely trusting them 100%.

Hope this makes sense, thanks for any tips or help!
EXACT same issue i've experienced since brand new, the rear end seems to shift horizontally when one would expect vertical movement going over bumps in a straight line... ive also experienced this very similar issue in multiple other cars, mainly european brands, and specifically running a wide staggered rear tire. i've chalked it up as the staggered wheel set up causing this issue. my 335 with oem 225/255 tires did this, a SLK i rode in with 235/275 did this, and it was the worst one i felt.
__________________
2011 335is Le Mans Blue
2016 X5 xdrive 35i Alpine White
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 05:44 PM.




xbimmers
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, 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