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New member, handling issue

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Westysprinter View Drop Down
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Joined: 05 Dec 2023
Location: North East
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    Posted: 05 Dec 2023 at 9:44pm
Hi
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
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NickDE View Drop Down
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Joined: 14 Mar 2015
Location: Newcastle
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NickDE Quote  Post ReplyReply Direct Link To This Post 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

I expect the hive mind will say non-run flats will make a big difference
Darkness gone, Tronic gone, Solo gone, DBA going, go Darknes2, go Frozen, go Black Pearl, go The Vibrator
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Westysprinter View Drop Down
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Joined: 05 Dec 2023
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Westysprinter Quote  Post ReplyReply Direct Link To This Post 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.
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