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When to replace trunk struts / hydraulics

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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Christopher72
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When to replace trunk struts / hydraulics

Post by Christopher72 » Mon Jan 30, 2023 10:46 pm

I'm curious, should it always feel like I'm preventing the trunk lid from damaging itself when closing? It's certainly not hard to drop the lid and seems like it would always land with an incredible force if not slowed. Time to replace the struts? or is that normal and new struts do the same and just look cleaner?
Christopher
2011 E89 Sdrive35i - Deep Sea Blue, Beige Kansas Leather
'fits in progress - PDC, Cameras, Comfort Access, Respray/Correction - all queued for poor weather.
(9) E46 convertibles; (1) E39 540i; (2) E36 Z3 roadsters; (1) Pre-prod E36 Z3- all gone

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When to replace trunk struts / hydraulics

Post by Smartbear » Mon Jan 30, 2023 11:11 pm

Christopher72 wrote: Mon Jan 30, 2023 10:46 pm I'm curious, should it always feel like I'm preventing the trunk lid from damaging itself when closing? It's certainly not hard to drop the lid and seems like it would always land with an incredible force if not slowed. Time to replace the struts? or is that normal and new struts do the same and just look cleaner?
I’d say it’s normal, i never let mine just fall shut in case it damages the soft close mechanism :thumbsup:
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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B21
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When to replace trunk struts / hydraulics

Post by B21 » Mon Jan 30, 2023 11:12 pm

I’ve bought a brand new set of OE supplier struts for both front and rear..yet to fit…will advise when I have for an A:B report :thumbsup:
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard..

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When to replace trunk struts / hydraulics

Post by Silverstar » Mon Jan 30, 2023 11:18 pm

Given the age of the car and if it's still has the original struts it's probably time to change them.
2009 sdrive30i auto Sapphire Black / Coral Red

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When to replace trunk struts / hydraulics

Post by matsmith749 » Tue Jan 31, 2023 11:19 pm

My 2016 car feels pretty stiff - needs pressure to open / close - let go whilst opening or closing & it just sticks where it is.

Definitely not 'loose'.
From Jan 2023 2016 e89 Z4 35is / mineral white / coral red interior / all the extras
SOLD 2010 e89 Z4 35is / space grey / coral red interior / all the extras
SOLD 2007 e85 Z4 3.0 si sport / midnight blue / champagne interior

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When to replace trunk struts / hydraulics

Post by Christopher72 » Wed Feb 01, 2023 3:08 pm

matsmith749 wrote: Tue Jan 31, 2023 11:19 pm My 2016 car feels pretty stiff - needs pressure to open / close - let go whilst opening or closing & it just sticks where it is.

Definitely not 'loose'.
Are those OEM struts or beefier ones?
Christopher
2011 E89 Sdrive35i - Deep Sea Blue, Beige Kansas Leather
'fits in progress - PDC, Cameras, Comfort Access, Respray/Correction - all queued for poor weather.
(9) E46 convertibles; (1) E39 540i; (2) E36 Z3 roadsters; (1) Pre-prod E36 Z3- all gone

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When to replace trunk struts / hydraulics

Post by B21 » Wed Feb 01, 2023 3:20 pm

We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard..

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