Eibach Springs

[MrSmartyPants]

Originally Posted by Juras

Those are just quick ones taken with the phone straight after the install (rear) and after another day and 150 km (front). Left before, right after. Unfortunatelly with different lighting but the difference is clearly visible anyway. Not a big one though, those are Eibachs after all and they still need to settle. This is ZCP. Got measures taken before, I will post them along with those after when I take them as well as full car pictures. TBC.

As for impressions: Very happy overall, car feels nearly stock with a little bit of more stiffness. In a good way though. It did not get uncomfortable, feels more direct, planted and controllable. No scrapping as a bonus, the front gap got quite tasty now with a few extra mm yet to go lower during settling. Can't imagine making any other choice. Spacers will follow.

I have a similar impression. Very happy with the V2s. Have around 10k on mine now. Lowest I'd do with the F80. Have only scraped the exhaust (Active Autowerke midpipe) on large speed bumps.

[r6khan]

Just bought used V1s for a good price. Past owner put 15K on em. Have read through alot of posts and owner experiences. Based on my understanding the fronts are much closer to OEM ZCP spring rates (183 compare to the 198 OEM spring rate) hence i plan to only install the fronts. Probably not going to get the EDC recalibrated/reset since its a leased car and i dont wanna mess with any coding which may cause me lease return issues (unless anyone can chime in on whether or not it voids warranty).

Main thing ive been obsessing over is the wear on my stock ZCP dampers. Due to slightly softer spring rates i am sure the damper will be working slightly harder on the same road surface hence there will be accelerated wear. Doing noob math i am thinking the eibach front spring is 8% softer hence worst case accelerated wear will reduce the life of the front strut by lets say 15%. If under medium road conditions the front struts will retain dampening till 50K miles than with the Eibachs they'll have a life of approx 40K miles. I am guessing when i return the car at 30K miles the struts/dampers should still be in good shape. Any educated car guys wanna share their feedback?

[parabmw]

Originally Posted by MannyM5

I also have 10mm spacers all around but do not have competition pack. The eibach spring rates are slightly lower than the CP ones. The difference is pretty minimal and I wouldn't expect then to have a noticeable change in handling if you went this route but note that they are slightly lower/softer and closer to the standard non CP front rates. Here are spring rate comparisons for you to review and help make your decision.

M3 (Civic)
Front - 177 lbs/in
Rear – 591 lbs/in

M3 (Comp. Pkg)
Front – 198 lbs/in
Rear – 685 lbs/in

Eibach Pro Kit
Front – 183 lbs/in
Rear – 628 lbs/in

Would changing fronts springs on m4 civic with v2 springs shouldn't upset the cars balance that much right?
Just to reduce front gap.
Or will the raked look be to much?

[Juras]

Originally Posted by r6khan

Just bought used V1s for a good price. Past owner put 15K on em. Have read through alot of posts and owner experiences. Based on my understanding the fronts are much closer to OEM ZCP spring rates (183 compare to the 198 OEM spring rate) hence i plan to only install the fronts. Probably not going to get the EDC recalibrated/reset since its a leased car and i dont wanna mess with any coding which may cause me lease return issues (unless anyone can chime in on whether or not it voids warranty).

Main thing ive been obsessing over is the wear on my stock ZCP dampers. Due to slightly softer spring rates i am sure the damper will be working slightly harder on the same road surface hence there will be accelerated wear. Doing noob math i am thinking the eibach front spring is 8% softer hence worst case accelerated wear will reduce the life of the front strut by lets say 15%. If under medium road conditions the front struts will retain dampening till 50K miles than with the Eibachs they'll have a life of approx 40K miles. I am guessing when i return the car at 30K miles the struts/dampers should still be in good shape. Any educated car guys wanna share their feedback?

You have overanalysed it Think about KW HAS kit. BMW would not sell under warranty a product which would increase the wear significantly. Those are sport shocks, they can take a lot and Eibach is just a cosmetic correction. Thats way less of a drop than you can drop HAS to. I really havent come across a story of early shock wear after installing those springs. People are using Macht Schnell which drop even more and mostly had no issues even after high milage. Go for it. But put both fronts and rears. Its a complete set, its meant to be like that. I really dont feel any disadvantage in handling in my ZCP despite a little lower spring rates. Nor other ZCP users reported any issues.

Parabmw, you should do the same especially on civic. Installing the rears will give you the benefit of achieving the ZCP front to rear springs ratio (not to be confused with rates, which are a bit lower). Which helped a lot in ZCP comparing to civic which was not as planted and stable.

[r6khan]

Makes sense.. eibachs come with a million mile warranty.. Any advice against installing used springs?

[Juras]

Originally Posted by r6khan

Makes sense.. eibachs come with a million mile warranty.. Any advice against installing used springs?

Yeah, its a spring warranty, not shocks. If you have really reliable source og used ones with known, low milage for half the price, maybe. But the they are not that expensive and this is about your safety after all. As for brakes and suspension elements I would personally go only for the new ones.

[r6khan]

Originally Posted by Juras

Yeah, its a spring warranty, not shocks. If you have really reliable source og used ones with known, low milage for half the price, maybe. But the they are not that expensive and this is about your safety after all. As for brakes and suspension elements I would personally go only for the new ones.

I ve read about springs settling in over couple hundred miles. Does that also apply to used springs? Is it sort of like breaking in the spring?

Should i wait before getting the alignment done?

[Juras]

I dont know about the settling of used. They will either settle a bit or not at all.
You should reset the EDC sensors and realign after 2 wks and a couple hundred of miles. +EDC reset.

[Duck Sauce]

How do you get the EDC reset?

[Juras]

[Duck Sauce]

Originally Posted by Juras

I've read damn near the whole thread and it is never mentioned. Thanks for the help sport.

[Juras]

Originally Posted by Duck Sauce

I've read damn near the whole thread and it is never mentioned. Thanks for the help sport.

Yeah, right... Had to be meticulously hidden in this 1% you haven't read.

https://f80.bimmerpost.com/forums/sh...&postcount=984

[parabmw]

Does flashing to cs EDC have the same effect?
Or is another step needed?

[Duck Sauce]

Originally Posted by Juras

Yeah, right... Had to be meticulously hidden in this 1% you haven't read.

https://f80.bimmerpost.com/forums/sh...&postcount=984

Brilliant.....1 line out how 47 pages that offers ZERO detail. Good find fella.

[Mustlistenfc]

Installed euro v1(E10-20-031-09-22) to my 18 f80 zcp last week and the car has 1"+ gap on rear right now.
do you guys think they will go lower after settling?

here is a picture
width of tape measure is 0.98"

[ruley74]

Originally Posted by Mustlistenfc

Installed euro v1(E10-20-031-09-22) last week and the car has 1"+ gap on rear right now.
do you guys think they will go lower after settling?

here is a picture
width of tape measure is 0.98"

On my 14 M4 with the V1's installed I can not slide a similar width tape through and sit it flat like you have there, so hopefully you will have a settling period which see's it drop some more. For me however this is with a 295 rear tyre as opposed to a 285.

Cheers,

[Juras]

It will settle about 0,1". You should have bought the V2.

[DanMpower]

Originally Posted by Mustlistenfc

Installed euro v1(E10-20-031-09-22) to my 18 f80 zcp last week and the car has 1"+ gap on rear right now.
do you guys think they will go lower after settling?

here is a picture
width of tape measure is 0.98"

Definitely not right, who did the install? Did you/they preload the rear suspension before tightening everything up? If not, it's not only bad for your rear bushings but it can possibly raise your rear end as well.

Right after the V1 install, my rear end has about 1/2 inch gap at most.

The rear should look like this right after install.

[parabmw]

Im between eibach v2 and kw v3.
Is it worth trying v2 before kw v3?
Most reviews says kw v3 are night and day.

[Mustlistenfc]

Originally Posted by M and Ms

Definitely not right, who did the install? Did you/they preload the rear suspension before tightening everything up? If not, it's not only bad for your rear bushings but it can possibly raise your rear end as well.

Right after the V1 install, my rear end has about 1/2 inch gap at most.

The rear should look like this right after install.

your f80 looks great!

I'm going to contact to eibach tomorrow morning.
Our local bmw dealer installed these springs last week. If I can figure out the problem with rear then I really want to keep the v1. I like V1 more because the V2 drop is too low, and the V1 is exactly what I was intending.

[Juras]

Originally Posted by parabmw

Im between eibach v2 and kw v3.
Is it worth trying v2 before kw v3?
Most reviews says kw v3 are night and day.

Sure, but their price is a multiple and they disable EDC.

[JDE92M3]

Ok guys I have read through about 20 pages, and I feel like I gained a lot of knowledge and information, but than I get confused as I start seeing pictures of cars and the end result. So my main concern, I am dropped on Swift springs. I'm happy with the ride 90% of the time after I coded in ZCP EDC coding. But my only gripe is on larger bumps the car gets very jarring. The car has almost no bounce and rides fine otherwise and has a perfect ride height, although I wouldn't mind a little more front end clearance. I was thinking about adding E36 bump stops, circa E9x days of adding more travel in suspension in hopes for more ride comfort. Is that an option for the F8x? Anyone try it? Also, I was sold on the Eibach V1, only because on the V2 I see some cars with the front end slammed, some pics I see the front end just right? What's the final conclusion? Also, in terms of ride comfort how well does Eibach manage large bumps? Honestly, if they manage large bumps as well I am more than happy to make the switch.

TLDR: I want the front end ride height of the V1, but I don't want to raise my rear from stock
Notes:
-V1 has rear suspension issues, Eibach replaces?
-V2 slams the front?

My car: 2016 F80 M3 Non-ZCP (Civic) + EDC

JD