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Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 6:11 pm
by HJBondar
Hi all - I just picked this car up yesterday knowing it needs new struts and shocks. My wife will be the 50% driver so I am looking for a suspension refresh that offer the most compliant possible rise given the nature of it having the M Sport set-up.

Aside from OEM's which are not candidates, the only two options I have found are Bilstein B6's and Koni Sports(yellow). The input I have received is that the Koni Sports, being adjustable, can be dialed in to be a bit softer than the non-adjustable Bilstein's.

Does anyone have experience and/or feedback on this?

Much appreciated - Z4 newbie:)

Z4 E89 2006 with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 6:26 pm
by Pbondar
Hello if it’s a 2006 car then it can only an E85 or E86?

Which model as ride height (AFAIK) varies by model?

Would help folks if you describe your current or intended wheel/tyre combo as well?

Z4 E89 2006 with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 6:33 pm
by enuff_zed
Welcome aboard.
Are you two related??

The quickest and easiest way to get some idea of what we're talking about is through a few pictures of your new Z.

Z4 E89 2006 with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 7:13 pm
by HJBondar
My bad. It is an e85!!

Z4 E85 2006 with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 7:15 pm
by HJBondar
Not related as far as I know but …?

Z4 E85 2006 with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 7:21 pm
by HJBondar
Photo added- I think!!

Z4 E85 2006 with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 7:44 pm
by Dave1971
I can’t comment on the bilstein shocks but I have koni shocks all round with eibach springs and have found them to be excellent. On a recent run out with some other forum members I went down a country road I’d normally avoid as it’s very bumpy. The car rode so much better than any of my previous zeds,I was very impressed.

Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 9:15 pm
by HJBondar
Thinking H&S progressive springs with Koni Sports? Could be convinced to go Bilstein or to another spring?

Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 10:29 pm
by Pbondar
HJBondar wrote: Wed Jul 14, 2021 7:15 pm Not related as far as I know but …?
Probably my father came from a small village near Poltava , Ukraine..

Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Wed Jul 14, 2021 10:56 pm
by HJBondar
My grandfather was from Ukraine:)

Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Thu Jul 15, 2021 2:53 am
by HJBondar
Dave1971 wrote: Wed Jul 14, 2021 7:44 pm I can’t comment on the bilstein shocks but I have koni shocks all round with eibach springs and have found them to be excellent. On a recent run out with some other forum members I went down a country road I’d normally avoid as it’s very bumpy. The car rode so much better than any of my previous zeds,I was very impressed.
Dave - can you tell me which Eibach springs you have and whether your Z came with the Msport suspension or not? Thx - Harvey

Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Thu Jul 15, 2021 9:11 am
by Pbondar
HJBondar wrote: Wed Jul 14, 2021 10:56 pm My grandfather was from Ukraine:)
Have you been visited your ancestral home?

Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Thu Jul 15, 2021 3:30 pm
by HJBondar
No I have not. You?

Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Thu Jul 15, 2021 4:51 pm
by Pbondar
HJBondar wrote: Thu Jul 15, 2021 3:30 pm No I have not. You?
Yes a few times..long stories..best taken to a different post /area..not much to do with Zeds :thumbsup:

Z4 E85 2006 3.0SI with M Sports Suspension - Koni vs Bilstein

Posted: Thu Jul 15, 2021 5:11 pm
by Scooba_Steve
HJBondar wrote: Wed Jul 14, 2021 6:11 pm I am looking for a suspension refresh that offer the most compliant possible rise given the nature of it having the M Sport set-up.
Sachs non-m sport springs and B4 shocks is an option.

Or get coilovers, set high and soft.