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Soft suspension

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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flybobbie
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Soft suspension

Post by flybobbie » Fri Mar 29, 2024 8:50 am

What would make the suspension softer, less sporty.
There are days i think, i'm going to be rid of this car.

My daily drive is country lanes and my old bones can't stand all the bumping and giggling around in my car, std. 23i.

I went from the std shocks to Bilstein 6 then to 4.

So do springs make a difference, still on std. springs at 100k miles.

Can you get say softer spring to smooth out the bumps?
Not into going around bends at 100mph.

2k35is
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Soft suspension

Post by 2k35is » Fri Mar 29, 2024 10:03 am

What sie wheels are you running and have you got non runflat tyres. In my experience the Bridgestone runflats are the worst possible tyres. Again from my experience Michelin pilot sports or Goodyear Eagle F1 asymmetric will give a far better.ride
My car always on 18" wheels but going down on size will help but I dont have any experience of this.
More radical is to change the dampers -had a R56 Cooper S changed the dampers for Koni FSD's with michelin tyres completely transformed the car. Koni's now called special active.
If want to try smaller wheel or tyre combination sure 2.3I owners will soon be along to give there experiences- just remember ride quality is a very subjective see if you can get wheel/trye combination on the car on roads you know before making a big spend.
Dec 2009 Z4 35i DCT Deep Sea Blue
2018 3 door Cooper S DCT
sold 2003 e46 330ci Convertible

flybobbie
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Soft suspension

Post by flybobbie » Fri Mar 29, 2024 7:24 pm

18" Goodyear Asy 5 F1's. I did consider the Koni shocks.
I did prefer the earlier F1's, the later seem harder wearing.

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Marcoose
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Soft suspension

Post by Marcoose » Fri Mar 29, 2024 9:59 pm

More cushions, grandpa.

:P
2016 35is, monoballs, camber plates, KWV3, PS4S, xHP, MHD, LFB pedal, flat bottom wheel, red indicators, black headlamps
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john-e89
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Soft suspension

Post by john-e89 » Fri Mar 29, 2024 10:27 pm

Budget depending quality coil overs do the job. I put KWV3’s on the 35i and it transformed the ride and handling, it can be marshmallow soft or stiff but still compliant as they have bump and rebound adjustments. Would be cheaper than changing the car.
M roady...OEM CSL’s, strut brace, Remus back boxes, ZHP
MR2 MK 2
E89 35i project car...mapped 365bhp, M4 stoppers & wheels, KWV3’s, H&R front ARB, M3 front arms, strut brace Eisenmann cat back race exhaust, VRSF downpipes inbound
E89 35is
G29

flybobbie
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Soft suspension

Post by flybobbie » Sat Mar 30, 2024 8:31 am

Marcoose wrote: Fri Mar 29, 2024 9:59 pm More cushions, grandpa.

:P
Cheapest solution :D
Kwv's over a grand.

Could give up job and then just avoid the bumpy roads.
Closer to the truth if this bad weather continues :cry:

2k35is
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Soft suspension

Post by 2k35is » Sat Mar 30, 2024 1:59 pm

flybobbie wrote: Fri Mar 29, 2024 8:50 am
Can you get say softer spring to smooth out the bumps?
h.
If its an M-sport could you not just fit Se springs.
Find somone with 2.3i Se first to see what difference in ride is.
Dec 2009 Z4 35i DCT Deep Sea Blue
2018 3 door Cooper S DCT
sold 2003 e46 330ci Convertible

Silverstar
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Soft suspension

Post by Silverstar » Sat Mar 30, 2024 4:54 pm

Put 17" wheels and tyres on!
2009 sdrive30i auto Sapphire Black / Coral Red

warmasice
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Soft suspension

Post by warmasice » Sat Mar 30, 2024 6:25 pm

Running standard m sport shocks with eibach pro kit springs (progressive spring rates) and Goodyear Eagle F1 asymmetric tyres here. Rides way better than stock with the run flat Bridgestons. No idea how they released a car with such a terrible ride from factory. I'm also running wheel spacers and I'm convinced they helped the ride even more.
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B21
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Soft suspension

Post by B21 » Sat Mar 30, 2024 6:54 pm

Given he finds B4s too harsh,it’s non MSport and it’s on 18” non run flats it’s time to move on..
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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…
A very modified Atacama Yellow 35is :thumbsup:

flybobbie
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Soft suspension

Post by flybobbie » Sat Mar 30, 2024 8:30 pm

I think i need a car where i can wear granddads flat cap, Dad's 70's three quarter length camel driving coat and Jackie Stewart's driving gloves.

A Jag......

Always wanted my friends 1998 xjr sport, lovely car.

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