Z-series - New member, handling issue

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New member, handling issue

Printed From: BMW Car Club Forum
Category: Cars & Registers
Forum Name: Z-series
Forum Description: Discussion forum for the Z-series
URL: https://www.bmwccgbforum.co.uk/forum_posts.asp?TID=16526
Printed Date: 27 Mar 2026 at 12:14am
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com

Topic: New member, handling issue

Posted By: Westysprinter
Subject: New member, handling issue
Date Posted: 05 Dec 2023 at 9:44pm

New to the club

I’ve a 2010 Z4 E89 3.0 sdrive auto on 18” run flats. Owned her 18 months

When failing to avoid pot holes, I feel a kick sideways at the rear

Never worried me too much, however I snapped a front coil spring so put a full bilstein eibach suspension kit on her, as you do

The cars a lot more compliant, rather than stiffer, which is good, but f**k me the kick is worse

I measured the geometry with a string box, both rear wheels were pointing right!! I corrected that and gave it about 1mm per side of toe in on the rear, but still no difference to this nasty little kick!

Any ideas? I’m guessing bushes? I can’t feel any play

Or is it inherent with run flats??

Cheers

Replies:

Posted By: NickDE
Date Posted: 08 Dec 2023 at 8:24am

Hi, welcome ! We will be very pleased to see you at North East Region events https://www.facebook.com/groups/bmwccgbneregion" rel="nofollow - https://www.facebook.com/groups/bmwccgbneregion

I expect the hive mind will say non-run flats will make a big difference

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Darkness gone, Tronic gone, Solo gone, DBA gone, go Darknes2, go Frozen, go Black Pearl, go Echo. RIP The Vibrator

Posted By: Westysprinter
Date Posted: 19 Dec 2023 at 7:53pm

White line poly bushes and she’s fixed, disappointed to receive little advice from the uk Forum, but my neighbour an ex service manager who contacted BMW direct.