[smak168]

Hey dmanb2b ,

I went through the same research over a year ago...I ended up with the 05-22 for my 440ix. I also ended installing the F80 front and rear bump stops (31-33-6-859-768, 31-33-7-847-662).

johnung was a super good resource on the set up and FaRKle! had easy to follow install instruction.

Good luck.

[dmanb2b]

Originally Posted by smak168

Hey dmanb2b ,

I went through the same research over a year ago...I ended up with the 05-22 for my 440ix. I also ended installing the F80 front and rear bump stops (31-33-6-859-768, 31-33-7-847-662).

johnung was a super good resource on the set up and FaRKle! had easy to follow install instruction.

Good luck.

Thank you, that looks great. Definitely not slammed up front. Enjoy the handling, good on general daily bumps? (I know potholes will suck)

[dmanb2b]

For anyone following this, here is a comparison of the two front spring options 05-22 vs. 06-22. 15mm lower.

[dmanb2b]

Might as well keep updating this thread with progress. My garage DIY time is extremely limited, so I owe Chris chris@strutmonkey a thank you for pulling together the fully assembled kit for me. I tend to work really slow and obssess during an install so this is great for me...just remove and replace, book an alignment...lol

[dmanb2b]

Was able to get some "me time" today. Installed the new suspension and replaced the front control arms. I only put a few miles on it, but so far I am thrilled. Really glad I went for the shorter front spring. Alignment is scheduled for this coming Tuesday. Thanks to everyone who helped me work through this.

Before (OEM 340ix suspension)


Immediately after install:


After a quick shake down run (should settle another 1/8-1/4" over the next two months.

[Markyboyt]

Originally Posted by dmanb2b

Might as well keep updating this thread with progress. My garage DIY time is extremely limited, so I owe Chris chris@strutmonkey a thank you for pulling together the fully assembled kit for me. I tend to work really slow and obssess during an install so this is great for me...just remove and replace, book an alignment...lol

With your kit do you know what Chris did about the the damper caps that hold the front dust cover at the bottom and also act as the bump cap? As far as I can tell from pictures of the Special actives they come without a cap like the sport yellows do. I’ve got sport yellows to fit to mine but don’t want to dismantle my old dampers but it seems the caps have to be swapped across.
You can see the caps on this thread https://f30.bimmerpost.com/forums/sh...ght=Koni+sport

[GuestBen]

Dude, looking sharp!!! Glad it all came together for you.

[dmanb2b]

Originally Posted by Markyboyt

With your kit do you know what Chris did about the the damper caps that hold the front dust cover at the bottom and also act as the bump cap? As far as I can tell from pictures of the Special actives they come without a cap like the sport yellows do. I’ve got sport yellows to fit to mine but don’t want to dismantle my old dampers but it seems the caps have to be swapped across.
You can see the caps on this thread https://f30.bimmerpost.com/forums/sh...ght=Koni+sport

Let me reach out to him and see if he can confirm

[Stlblues]

Originally Posted by johnung

Yes, I have a 2015 335ix with KoniSA's and Eibach -06 kit right now. It's looking like I'm going to swap in the Eibach -05 springs when the weather warms up. The rear springs on the two kits are identical.

The front springs have exactly the same spring rates so the ride should essentially be the same. The -06 lower the front by 20mm under stock. Accordingly Eibach tech support the -05 front springs should drop my front by another 15mm.

At the same time I'll swap in the F80 bump stops and change out the rubber spring perches that have 8 years on them.

This was interesting to read. Are you keeping the SAs? Previously you had indicated that in your discussions with Koni they had said that the SAs were developed with the Eibachs and are ok with a "mild drop". I am curious if you have confirmed with Koni that the SAs would be ok with the more aggressive drop? I ask because I am on Dinan springs, and considered the SAs, but could never get a definitive answer from Koni on the compatibility. Your lower Eibachs will be roughly the same as the Dinans I think.

[johnung]

Originally Posted by Stlblues

This was interesting to read. Are you keeping the SAs? Previously you had indicated that in your discussions with Koni they had said that the SAs were developed with the Eibachs and are ok with a "mild drop". I am curious if you have confirmed with Koni that the SAs would be ok with the more aggressive drop? I ask because I am on Dinan springs, and considered the SAs, but could never get a definitive answer from Koni on the compatibility. Your lower Eibachs will be roughly the same as the Dinans I think.

You must have a different car because Dinan springs for mine are 0.75" drop all around.
Yes, Koni told me that I wouldn't have a piston travel issue with their Special Actives. I just need to use the shorter F80 bump stops.

[Stlblues]

Originally Posted by johnung

You must have a different car because Dinan springs for mine are 0.75" drop all around.
Yes, Koni told me that I wouldn't have a piston travel issue with their Special Actives. I just need to use the shorter F80 bump stops.

I have a 2017 340 xdrive. The Dinans lower it 1"F and 1-1/8"R, so approximately 25mm and 29mm. If I am reading your post right you would be dropping another 20mm for a total of 35mm? If that is true, it would be lower than my springs which I could not get confirmation on the compatibility with the SAs. I know you have talked to them a lot so I was wondering if you got confirmation the lower drop wouldnt be problem with the SAs. Maybe I read it wrong though?

[dmanb2b]

Originally Posted by Stlblues

I have a 2017 340 xdrive. The Dinans lower it 1"F and 1-1/8"R, so approximately 25mm and 29mm. If I am reading your post right you would be dropping another 20mm for a total of 35mm? If that is true, it would be lower than my springs which I could not get confirmation on the compatibility with the SAs. I know you have talked to them a lot so I was wondering if you got confirmation the lower drop wouldnt be problem with the SAs. Maybe I read it wrong though?

While my suspension still has some settling to do, I can confirm the 05-22 do not drop the suspension over 1", at least not from my 54kmile ride height, maybe from new. Pre-install, fender to floor measurements were 27.25" front and 27" in back. I am currently at 26.5" both front and back...my guess is I will settle another 1/8-1/4" over the next few months. Hope this helps.

[dmanb2b]

Alignment is done and this project is a wrap...on to my Brake "upgrade"

[johnung]

Originally Posted by dmanb2b

While my suspension still has some settling to do, I can confirm the 05-22 do not drop the suspension over 1", at least not from my 54kmile ride height, maybe from new. Pre-install, fender to floor measurements were 27.25" front and 27" in back. I am currently at 26.5" both front and back...my guess is I will settle another 1/8-1/4" over the next few months. Hope this helps.

According to Eibach the drop is relative. So a car that already has the -06 front springs like mine will drop another 15mm if they are replaced by the -05 front springs. The rear springs on both Eibach kits are the same.

[johnung]

Originally Posted by Stlblues

I have a 2017 340 xdrive. The Dinans lower it 1"F and 1-1/8"R, so approximately 25mm and 29mm. If I am reading your post right you would be dropping another 20mm for a total of 35mm? If that is true, it would be lower than my springs which I could not get confirmation on the compatibility with the SAs. I know you have talked to them a lot so I was wondering if you got confirmation the lower drop wouldnt be problem with the SAs. Maybe I read it wrong though?

That's exactly what Koni told me.

[dmanb2b]

Originally Posted by johnung

According to Eibach the drop is relative. So a car that already has the -06 front springs like mine will drop another 15mm if they are replaced by the -05 front springs. The rear springs on both Eibach kits are the same.

I know they are. I posted pictures of the two front springs and discussed confusion on rear springs earlier in this thread.

[Stlblues]

Originally Posted by johnung

That's exactly what Koni told me.

Koni said the SAs would work with a 35mm drop?

[Tommi_Mav]

Originally Posted by dmanb2b

Was able to get some "me time" today. Installed the new suspension and replaced the front control arms. I only put a few miles on it, but so far I am thrilled. Really glad I went for the shorter front spring. Alignment is scheduled for this coming Tuesday. Thanks to everyone who helped me work through this.

Before (OEM 340ix suspension)


Immediately after install:


After a quick shake down run (should settle another 1/8-1/4" over the next two months.

Excellent result! Exactly how it should be from factory. The shorter front spring version resulted in this flat ride. Enjoy it!

[dmanb2b]

Originally Posted by Markyboyt

With your kit do you know what Chris did about the the damper caps that hold the front dust cover at the bottom and also act as the bump cap? As far as I can tell from pictures of the Special actives they come without a cap like the sport yellows do. I’ve got sport yellows to fit to mine but don’t want to dismantle my old dampers but it seems the caps have to be swapped across.
You can see the caps on this thread https://f30.bimmerpost.com/forums/sh...ght=Koni+sport

I finally got a chance to connect with Chris. This was his reply, I hope it helps: "The special actives do not come with those caps. They instead provide plastic washers you can use. I use those. Frankly, I don't think you have to use anything."

[Markyboyt]

Originally Posted by dmanb2b

I finally got a chance to connect with Chris. This was his reply, I hope it helps: "The special actives do not come with those caps. They instead provide plastic washers you can use. I use those. Frankly, I don't think you have to use anything."

Ok thanks for asking him, the sport yellows come with plastic washers for the rears but not for the fronts, instead they have the instruction to swap the cap.
I wonder what the special actives do about holding down the dust boot.

[dmanb2b]

Just a quick update, after some seat time. The resulting ride is very compliant, slightly firmer and less body roll. Objective accomplished. Very please with the result and glad I refrained from going the coilover route. Setting up the spring/shock combo correctly is key and this for me is now perfect.

[dmanb2b]

Bump, in case anyone is going through this decision process