E90Post
 


Extreme Powerhouse
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > All-Wheel-Drive (Xi / xDrive) Talk > xdrive suspension purchase decision



Reply
 
Thread Tools Search this Thread
      05-15-2019, 10:38 PM   #1
kegwalker
New Member
0
Rep
15
Posts

Drives: 2011 e90 335ix (n55) 6mt
Join Date: May 2019
Location: Breckenridge, CO

iTrader: (0)

xdrive suspension purchase decision

Hi all,

2011 e90 6mt AWD 335ix

Tired of the stock suspension, and about to purchase Dinan springs. My question is what shocks?

I have 1 yr old bilstein B4 all around. Should I use re-use these? Are they valved appropriately for Dinan springs?
Go with B8?
Go with koni yellows? If this, should I do the custom Dinan top adjust rears for $300 each (ouch!)?
If the full koni setup, then is the $1300 better spent on Coilovers? I want to keep close to stock ride height. Ok to drop a little, but not much.
Sell the car and get something else that is better sorted (M235ix?)

I know that the adjustability allows for some additional control of the damping rates, but I would most likely set and leave it be. We are either in winter (potholes, snow, etc), or construction season (grooved asphalt, transitions) and I don't plan on taking this to the track.

I'm ok spending the money if the ride in the end is worth it and durable (slight hesitancy towards konis on this). Ideally, anyone in Colorado with any of these setups? Can I ride along and feel how it rides?

Cheers!
Appreciate 0
      05-16-2019, 12:04 PM   #2
335xs2dinan
First Lieutenant
335xs2dinan's Avatar
31
Rep
300
Posts

Drives: 2008 E92 335xi
Join Date: Jul 2013
Location: Michigan

iTrader: (15)

I have Dinan springs w M3 rear subframe bushing, UUC front and rear sway bars, and Koni yellow front/Dinan rears and absolutely love the setup. Completely different car, not harsh like coil overs and generally more durable. Had one of the rear shocks seize after 80k miles and Dinan replaced it under Koni lifetime warranty. The rest of them are going strong still. If you want ultimate lowering and handling capabilities and ride quality isn't a significant factor then maybe go coil overs. Personally had KWV3s, held the road great but hated driving the car in Michigan. Might've liked it somewhere w better roads.
__________________
Dinan Stage 3/Cobb FMIC/ER Sport Oil Cooler/CPE Catted DP/BMS DCI/Eisenman Race/Koni Yellow F + Dinan R/Dinan Springs/UUC F + R Sways/M3 subframe bushings/OEM 313 Wheels/M3 steering wheel
Appreciate 0
      05-17-2019, 12:28 AM   #3
kegwalker
New Member
0
Rep
15
Posts

Drives: 2011 e90 335ix (n55) 6mt
Join Date: May 2019
Location: Breckenridge, CO

iTrader: (0)

Good to hear. Did a Dinan / BMW dealer do the install for you?
What settings are you running the koni at?
Lastly, did you add the rsfb and uuc at the same time or after?

Thanks!
Appreciate 0
      05-17-2019, 04:17 PM   #4
kegwalker
New Member
0
Rep
15
Posts

Drives: 2011 e90 335ix (n55) 6mt
Join Date: May 2019
Location: Breckenridge, CO

iTrader: (0)

I should also clarify that my only goal in upgrading the suspension is the ride / handling. I am truely puzzled at how the suspension can act soft (body roll, brake dive, acceleration squat) and harsh (potholes) at the same time.

I'm ok with a firmer ride that controls the body, and hopefully takes some of the harshness out of the pothole impacts. I should also mention I ditched runflats within a few months of purchasing the car.

cheers,
Appreciate 0
      05-18-2019, 12:45 PM   #5
Achappell8
Private First Class
Achappell8's Avatar
United_States
48
Rep
132
Posts

Drives: BMW 335xi M Sport
Join Date: Apr 2016
Location: Boston, MA

iTrader: (0)

Garage List
2011 BMW 335xi  [0.00]
I have the same car as you and went with KW V1s when it was time to replace the suspension. Overall, very happy with the upgrade. Car felt completely different from stock floaty suspension. I don't live in Colorado but live in Massachusetts which may have similar road conditions.

The guy above that moved off of coilovers was on the most aggressive coilovers KW makes (v3). Variant 1 is a less aggressive offering in terms of ride stiffness.
Appreciate 0
      05-18-2019, 11:05 PM   #6
335xs2dinan
First Lieutenant
335xs2dinan's Avatar
31
Rep
300
Posts

Drives: 2008 E92 335xi
Join Date: Jul 2013
Location: Michigan

iTrader: (15)

Quote:
Originally Posted by kegwalker View Post
Good to hear. Did a Dinan / BMW dealer do the install for you?
What settings are you running the koni at?
Lastly, did you add the rsfb and uuc at the same time or after?

Thanks!
The dinan rear adjustables were preset by dinan and I have not adjusted them. The front Koni yellow struts were set right in the middle of the two turn range. I did actually do the rear subframe bushing and UUC sways at the same time. I didnt have those with my coilover setup. I had a local member/friend who was a BMW tech do the install.
__________________
Dinan Stage 3/Cobb FMIC/ER Sport Oil Cooler/CPE Catted DP/BMS DCI/Eisenman Race/Koni Yellow F + Dinan R/Dinan Springs/UUC F + R Sways/M3 subframe bushings/OEM 313 Wheels/M3 steering wheel
Appreciate 0
      05-18-2019, 11:07 PM   #7
335xs2dinan
First Lieutenant
335xs2dinan's Avatar
31
Rep
300
Posts

Drives: 2008 E92 335xi
Join Date: Jul 2013
Location: Michigan

iTrader: (15)

Quote:
Originally Posted by Achappell8 View Post
I have the same car as you and went with KW V1s when it was time to replace the suspension. Overall, very happy with the upgrade. Car felt completely different from stock floaty suspension. I don't live in Colorado but live in Massachusetts which may have similar road conditions.

The guy above that moved off of coilovers was on the most aggressive coilovers KW makes (v3). Variant 1 is a less aggressive offering in terms of ride stiffness.
Went with KWV3 so I could run it softer if need be but couldnt find a happy medium that I was satisfied with.
__________________
Dinan Stage 3/Cobb FMIC/ER Sport Oil Cooler/CPE Catted DP/BMS DCI/Eisenman Race/Koni Yellow F + Dinan R/Dinan Springs/UUC F + R Sways/M3 subframe bushings/OEM 313 Wheels/M3 steering wheel
Appreciate 0
      05-19-2019, 11:03 PM   #8
kegwalker
New Member
0
Rep
15
Posts

Drives: 2011 e90 335ix (n55) 6mt
Join Date: May 2019
Location: Breckenridge, CO

iTrader: (0)

Quote:
Originally Posted by 335xs2dinan View Post
The dinan rear adjustables were preset by dinan and I have not adjusted them. The front Koni yellow struts were set right in the middle of the two turn range. I did actually do the rear subframe bushing and UUC sways at the same time. I didnt have those with my coilover setup. I had a local member/friend who was a BMW tech do the install.
Great info, thanks!
Appreciate 0
      05-29-2019, 06:22 PM   #9
kegwalker
New Member
0
Rep
15
Posts

Drives: 2011 e90 335ix (n55) 6mt
Join Date: May 2019
Location: Breckenridge, CO

iTrader: (0)

I decided to put this decision on hold until I replace the RFSB - I'm wondering how much of this slop is due to 125k old hollow bushings.

So, here is my game plan
Replace RSFB with whiteline bushings (just ordered)
Replace tension strut hydro bushing with Strongflex (ordered that too- TS are only 1 yr old, but would like to see the difference. I still have my old arms so I will put bushings in old ones and swap out).
Depending on how this handles, maybe just install the UUC front sway that has been sitting in my garage for a month.

Quick question- who has a diff lock down and what are you're thoughts? I've heard mixed reviews that some notice a difference, some dont / or installed in combination with diff bushings and or RFSB.

My build plan once the ride & handling is sorted is DP & muffler delete with tune. Probably just stay at stage 1. for now.
Appreciate 0
      05-31-2019, 04:57 AM   #10
bmwfan123
New Member
0
Rep
5
Posts

Drives: e92
Join Date: May 2019
Location: Poland

iTrader: (0)

I "m also planning to change suspension and I will be grateful for any suggestion
Appreciate 0
      05-31-2019, 12:08 PM   #11
kegwalker
New Member
0
Rep
15
Posts

Drives: 2011 e90 335ix (n55) 6mt
Join Date: May 2019
Location: Breckenridge, CO

iTrader: (0)

I'll let you know how it does - but it will probably take me until the end of June before it is installed
Appreciate 0
      06-13-2019, 02:08 PM   #12
kegwalker
New Member
0
Rep
15
Posts

Drives: 2011 e90 335ix (n55) 6mt
Join Date: May 2019
Location: Breckenridge, CO

iTrader: (0)

First step done - proper alignment with weight in the seats. This makes the car ride better without even replacing any of the bushings. I had 0.03 degree toe out on left rear- probably from a pothole, but could have also been due to unweighted previous alignment last fall.

Will work on the tension strut bushings this weekend and report back.
Appreciate 0
      08-02-2019, 11:34 AM   #13
namegoeswhere
New Member
2
Rep
7
Posts

Drives: 2011 328xi
Join Date: May 2016
Location: MN

iTrader: (0)

What suspension setup did you go with, or was it just bushings and an alignment at the time?

I have an '11 328xi and the rear struts are leaking. Might as well use that as an excuse to upgrade.
Appreciate 0
      08-02-2019, 09:29 PM   #14
4 Doors
Captain
4 Doors's Avatar
184
Rep
695
Posts

Drives: 2008 BMW 335xi (E90)
Join Date: Mar 2018
Location: Michigan

iTrader: (1)

Garage List
2008 BMW 335xi  [5.00]
Quote:
Originally Posted by namegoeswhere View Post
What suspension setup did you go with, or was it just bushings and an alignment at the time?

I have an '11 328xi and the rear struts are leaking. Might as well use that as an excuse to upgrade.
Not OP, but I am using Eibach Pro-Kit springs over KONI Yellows (sport) and am loving it. Great for daily driving and still very sporty and responsive.
__________________
Instagram: @4doors

Current: 2008 E90 335xi Sport
Past: 1996 E36 328i Sport (bought in 2007)
Appreciate 0
      09-20-2019, 09:05 PM   #15
Soravia
Private
United_States
11
Rep
80
Posts

Drives: 2011 E91 Silver xDrive 6MT
Join Date: Apr 2013
Location: Kentucky

iTrader: (0)

You'll NEVER get proper handling with those crappy lowering springs that are 10-30% stronger, and dampers that were never made to match the springs but only make you FEEL sporting via over damping on compression.

Get a full kit that's tuned and have springs that are 200-400% stronger to cut body roll, with tuned dampers to control rebound
Appreciate 0
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 04:55 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, 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