Eibach Springs

manticor · 08-06-2015, 05:25 PM

Quote:

Originally Posted by supremepower

What mitch said

Most mild drop can be found with ACS at 1" front/ 0.25" rear on the M4, and 0.8" front/0.25" rear on the M3.

Swift springs are 1.0" front/0.4" rear on the M3 and 1.1" front/0.8" rear on the M4

What are the spring rates of the acs springs? I tend to think the swifts will be too stiff for daily driving..

tr3flip · 08-07-2015, 01:17 PM

Quote:

Originally Posted by JTO24

Lol I wish but naa there's some debate as to if there really is a need for two versions. They might just be sticking with the euro spec but I don't have that info.

We are definitely not sticking to the euro version. I'll post more info once our German and US engineers come to a conclusion. Sorry for the delay, guys!

x.shell · 08-07-2015, 01:37 PM

Quote:

Originally Posted by tr3flip

We are definitely not sticking to the euro version. I'll post more info once our German and US engineers come to a conclusion. Sorry for the delay, guys!

Really? What conclusion can the engineers come up with that required so much time? "Yes, we will release it. No, we won't release it." It's literally been one whole year since this particular thread started. I have no skin in the game because I'm not getting the Eibachs, but you guys went from being one of the only games in town to a crowded field of alternatives. Again, I don't really care, but wow was this release botched.

ackreppsiii · 08-11-2015, 07:39 AM

Word!

Nachbar · 08-11-2015, 08:42 AM

I have Eibach springs and KW adjustment rings on my F80 LCI, see pics Below. Spacers 11mm front, 12.5mm back.

kitw · 08-11-2015, 02:40 PM

Quote:

Originally Posted by manticor

What are the spring rates of the acs springs? I tend to think the swifts will be too stiff for daily driving..

Springs are generally never too stiff for daily driving. What most people feel as "too stiff" are the bumpstops coming into play more because of reduced ride height. You HAVE to go stiffer to keep the car from contacting the bumpstops over bumps... and therein lies the problem, with stiffer springs, you need more rebound damping. The Active suspension seems to have enough to keep up with some lowering springs, but I found that my F80 and it's passive suspension got bouncy really fast with the H&Rs. :/

I got Active on my F82, but I will likely get real coilovers anyway

supremepower · 08-11-2015, 03:04 PM

Quote:

Originally Posted by kitw

Springs are generally never too stiff for daily driving. What most people feel as "too stiff" are the bumpstops coming into play more because of reduced ride height. You HAVE to go stiffer to keep the car from contacting the bumpstops over bumps... and therein lies the problem, with stiffer springs, you need more rebound damping. The Active suspension seems to have enough to keep up with some lowering springs, but I found that my F80 and it's passive suspension got bouncy really fast with the H&Rs. :/

I got Active on my F82, but I will likely get real coilovers anyway

^ Very well said!

manticor · 08-11-2015, 06:23 PM

So I guess I won't drop lol... But seriously when the hell are these springs coming to market?

x.shell · 08-12-2015, 12:43 PM

Quote:

Originally Posted by manticor

So I guess I won't drop lol... But seriously when the hell are these springs coming to market?

When the "German and US engineers come to a conclusion".

CanAutM3 · 08-12-2015, 12:53 PM

Quote:

Originally Posted by Nachbar

I have Eibach springs and KW adjustment rings on my F80 LCI, see pics Below. Spacers 11mm front, 12.5mm back.

Since you are from Switzerland, I have to assume you have the Euro spec springs. Can you comment on driving impressions? Also, can you elaborate on the function of the "KW adjustment rings"?

fourtailpipes · 08-12-2015, 01:17 PM

there's definitely something fishy going on with the spring rates. way earlier in this thread i chimed in, concluding that the existing european springs must be both shorter and softer than the oem springs, and (it seems like) this has been confirmed, though the rationale remains a mystery. eibach releasing a second "american" version with stiffer-than-oem spring rates makes sense, but confuses the ideology of the soft "european" springs. i've had eibach springs in the past on other vehicles, but this has scared me away. i'll be waiting for the oem zcp springs, which should be coming in under a year.

manticor · 08-12-2015, 01:23 PM

Quote:

Originally Posted by tr3flip

We are definitely not sticking to the euro version. I'll post more info once our German and US engineers come to a conclusion. Sorry for the delay, guys!

So what options are these engineers mulling over to get to this this conclusion?

Nachbar · 08-12-2015, 03:33 PM

Quote:

Originally Posted by CanAutM3

Quote:

Originally Posted by Nachbar

I have Eibach springs and KW adjustment rings on my F80 LCI, see pics Below. Spacers 11mm front, 12.5mm back.

Since you are from Switzerland, I have to assume you have the Euro spec springs. Can you comment on driving impressions? Also, can you elaborate on the function of the "KW adjustment rings"?

Everything is now one step harder. Comfort feels now like sport before. I's a nice sporty feeling, not to hard. My pregnat wife didn't notice

I didn't see the adjustable rings.. but at installation you can lift or lower the car just as you want. The dealer asked me, if I'd prefere it a bit lower or higher.
Could I answer your questions?

tr3flip · 08-12-2015, 03:53 PM

Quote:

Originally Posted by manticor

So what options are these engineers mulling over to get to this this conclusion?

The rates are staying the same as our US spec we originally posted and tested. We made some slight fitment changes to the design for a better OE fit.

We have prototypes available for testing if anyone local to Corona, CA would like to get free set installed by Eibach Technicians. Shoot me a PM if interested.

fourtailpipes · 08-12-2015, 05:21 PM

Quote:

Originally Posted by Nachbar

Everything is now one step harder. Comfort feels now like sport before. I's a nice sporty feeling, not to hard. My pregnat wife didn't notice

I didn't see the adjustable rings.. but at installation you can lift or lower the car just as you want. The dealer asked me, if I'd prefere it a bit lower or higher.
Could I answer your questions?

i didn't think the KW HAS adjustable spring perch was compatible with the oem-style spring seat, like used by eibach. can you provide pics?

x.shell · 08-12-2015, 05:42 PM

Quote:

Originally Posted by fourtailpipes

i didn't think the KW HAS adjustable spring perch was compatible with the oem-style spring seat, like used by eibach. can you provide pics?

Yeah, I don't believe it either. Even if he were able to mix a KW HAS kit with Euro Eibach springs, the stack height from the HAS kit would prevent the car from sitting that low. But I have no idea what kind of crazy kits they have in Europe.

manticor · 08-12-2015, 07:54 PM

Quote:

Originally Posted by tr3flip

Quote:

Originally Posted by manticor

So what options are these engineers mulling over to get to this this conclusion?

The rates are staying the same as our US spec we originally posted and tested. We made some slight fitment changes to the design for a better OE fit.

We have prototypes available for testing if anyone local to Corona, CA would like to get free set installed by Eibach Technicians. Shoot me a PM if interested.

I live close to corona California in NYC and I'll pay for the shipping!!!

fourtailpipes · 08-13-2015, 10:35 AM

Quote:

Originally Posted by ex o

Yeah, I don't believe it either. Even if he were able to mix a KW HAS kit with Euro Eibach springs, the stack height from the HAS kit would prevent the car from sitting that low. But I have no idea what kind of crazy kits they have in Europe.

...or maybe by some coincidence/rigging, the oem spring seat can mount on top of the kw sleeve and adjustable perch?

x.shell · 08-13-2015, 12:04 PM

Quote:

Originally Posted by fourtailpipes

...or maybe by some coincidence/rigging, the oem spring seat can mount on top of the kw sleeve and adjustable perch?

If that's the case, then the stack height would be even more... preventing it from going as low as his photos represent. You will also have the issue of the Eibach spring fitting over the wider diameter of the KW sleeve. I still call malarkey.

fourtailpipes · 08-13-2015, 12:41 PM

Quote:

Originally Posted by ex o

If that's the case, then the stack height would be even more... preventing it from going as low as his photos represent. You will also have the issue of the Eibach spring fitting over the wider diameter of the KW sleeve. I still call malarkey.

just wishful thinking. i'd be thrilled if he came back with a pic showing that some rigging could result in an oem-style spring mounting on the KW adjustable sleeve. pipe dream i'm sure. i'd love to find another way to lower the front just slightly, without changing the springs. was hoping the tck camber plates would come in with a slightly reduced stack height, but no luck there either.

Tempe Mendoan · 08-13-2015, 12:50 PM

Quote:

Originally Posted by tr3flip

Quote:

Originally Posted by manticor

So what options are these engineers mulling over to get to this this conclusion?

The rates are staying the same as our US spec we originally posted and tested. We made some slight fitment changes to the design for a better OE fit.

We have prototypes available for testing if anyone local to Corona, CA would like to get free set installed by Eibach Technicians. Shoot me a PM if interested.

Is it mean that the Euro Spec is not perfectly fit to the OE?

Nachbar · 08-14-2015, 08:54 PM

Quote:

Originally Posted by fourtailpipes

Quote:

Originally Posted by ex o

If that's the case, then the stack height would be even more... preventing it from going as low as his photos represent. You will also have the issue of the Eibach spring fitting over the wider diameter of the KW sleeve. I still call malarkey.

just wishful thinking. i'd be thrilled if he came back with a pic showing that some rigging could result in an oem-style spring mounting on the KW adjustable sleeve. pipe dream i'm sure. i'd love to find another way to lower the front just slightly, without changing the springs. was hoping the tck camber plates would come in with a slightly reduced stack height, but no luck there either.

How could I take a pic? Well, I can take a pic from the stuff they took out. Would that help?

08-11-2015, 07:39 AM	#356
ackreppsiii New Member 6 Rep 24 Posts Drives: 2015 Shakir Orange M4 Join Date: Oct 2014 Location: Georgia iTrader: (0)	Word!
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08-11-2015, 08:42 AM	#357
Nachbar Captain 8024 Rep 671 Posts Drives: i8 Join Date: Jul 2015 Location: Switzerland iTrader: (0)	I have Eibach springs and KW adjustment rings on my F80 LCI, see pics Below. Spacers 11mm front, 12.5mm back. Attached Images
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08-11-2015, 06:23 PM	#360
manticor Lieutenant 133 Rep 501 Posts Drives: F80 built july 1........... Join Date: Aug 2013 Location: nyc iTrader: (0)	So I guess I won't drop lol... But seriously when the hell are these springs coming to market?
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08-12-2015, 01:17 PM	#363
fourtailpipes Major 110 Rep 1,338 Posts Drives: the ladies crazy Join Date: Dec 2008 Location: , Location, Location! iTrader: (0)	there's definitely something fishy going on with the spring rates. way earlier in this thread i chimed in, concluding that the existing european springs must be both shorter and softer than the oem springs, and (it seems like) this has been confirmed, though the rationale remains a mystery. eibach releasing a second "american" version with stiffer-than-oem spring rates makes sense, but confuses the ideology of the soft "european" springs. i've had eibach springs in the past on other vehicles, but this has scared me away. i'll be waiting for the oem zcp springs, which should be coming in under a year.
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