Eibach Springs

JTO24 · 06-02-2015, 06:28 PM

Quote:

Originally Posted by tr3flip

Front: 22mm lower at 200lb/in
Rear: 5mm lower at 685lb/in
Eibach Part# 20122.140

The photo is also clickable and has the above specs in the description.

Ok these seem pretty much perfect! Can't wait to see installed pics!!

Booster · 06-02-2015, 08:07 PM

Do want... My car arrives at port tomorrow...

CanAutM3 · 06-02-2015, 08:37 PM

Quote:

Originally Posted by tr3flip

Front: 22mm lower at 200lb/in
Rear: 5mm lower at 685lb/in
Eibach Part# 20122.140

The photo is also clickable and has the above specs in the description.

Comparing from a picture from the Euro spec from another thread, it seems like the US spec front springs have a more progressive rate then the Euro spec (middle one in the picture). Is this assumption correct, or is it just an optical illusion due to the angle?

tr3flip · 06-04-2015, 11:27 AM

Quote:

Originally Posted by CanAutM3

Comparing from a picture from the Euro spec from another thread, it seems like the US spec front springs have a more progressive rate then the Euro spec (middle one in the picture). Is this assumption correct, or is it just an optical illusion due to the angle?

We've increased the front rate by 34lbs/in and lowered 2mm more over the Euro spec counterpart. The rear height will be the same as the Euro spec but we've increased the rates slightly in the rear too.

tr3flip · 06-05-2015, 03:33 PM

Quote:

Originally Posted by JTO24

Ok these seem pretty much perfect! Can't wait to see installed pics!!

I should have pics to post up real soon. We finalized our M3 test fitment yesterday and have the M4 in today getting test fitted with the new kit.

manticor · 06-05-2015, 10:10 PM

Anyone???? Euro specs va US specs for comparison please???

f82mw · 06-06-2015, 07:31 PM

So whats the exact us drop in inches? I heard it was 1.2/0.7

JTO24 · 06-06-2015, 07:54 PM

Quote:

Originally Posted by Michael_

So whats the exact us drop in inches? I heard it was 1.2/0.7

Based on earlier posts: .866" [22 mm] front, .196" [5 mm] rear

tr3flip · 06-08-2015, 09:50 AM

Quote:

Originally Posted by manticor

Anyone???? Euro specs va US specs for comparison please???

Euro = 20mm front lowering and 5mm rear lowering.
US = 22mm front lowering and 6mm rear lowering with increased spring rates.

Here's a quick snap of the M4 we test fitted the US spec Pro-Kit on last Friday.

Jaymax85 · 06-08-2015, 10:50 AM

Any more pics from the side?

tr3flip · 06-08-2015, 11:17 AM

I'll post more pics as I get them. These are being sent to me from our Marketing Department.

Jaymax85 · 06-08-2015, 11:24 AM

Is the drop only 6mm even for the coupe? The m4 rear needs more of a drop than that

tr3flip · 06-08-2015, 12:26 PM

Quote:

Originally Posted by jawwadh

Is the drop only 6mm even for the coupe? The m4 rear needs more of a drop than that

Yes, but we're noticing quite a bit of settling with the M3 and M4 bushings in the rear. It may end up being 1 or 2mm more once settled.

fourtailpipes · 06-08-2015, 01:50 PM

Quote:

Originally Posted by HP Autosport

For comparison:

185 lb/in Stock M3/4 Front Springs
575 lb/in Stock M4/4 Rear Springs

280 lb/in Swift Spec-R Front Springs(rate may change)
730 lb/in Swift Spec-R Rear Springs(rate may change)

Quote:

Originally Posted by tr3flip

Front: 22mm lower at 200lb/in
Rear: 5mm lower at 685lb/in
Eibach Part# 20122.140

Quote:

Originally Posted by tr3flip

We've increased the front rate by 34lbs/in and lowered 2mm more over the Euro spec counterpart.

according to HPA, the OEM front spting rate is ~185 lb/in. if the US eibach front spring rate is 200 lb/in and is 34 lb/in stiffer than the euro eibach front spring rate, that makes the euro eibach front spring rate 166 lb/ft, or 19 lb/ft softer than oem? which piece of info above is incorrect? is 200 the rate for the EURO front, and the US front is 34 greater than that?

tr3flip · 06-08-2015, 02:55 PM

Quote:

Originally Posted by fourtailpipes

according to HPA, the OEM front spting rate is ~185 lb/in. if the US eibach front spring rate is 200 lb/in and is 34 lb/in stiffer than the euro eibach front spring rate, that makes the euro eibach front spring rate 166 lb/ft, or 19 lb/ft softer than oem? which piece of info above is incorrect? is 200 the rate for the EURO front, and the US front is 34 greater than that?

Not trying to discredit anyone, but wouldn't you want to believe the guy who works for Eibach? I have direct access to this information and know what I posted is accurate.

The Euro Spec Eibach spring is softer than OE. Don't ask why. Maybe for TUV purposes. I'm not sure. This is a huge reason why we developed our US version.

CanAutM3 · 06-08-2015, 03:02 PM

Quote:

Originally Posted by tr3flip

The Euro Spec Eibach spring is softer than OE. Don't ask why. Maybe for TUV purposes. I'm not sure. This is a huge reason why we developed our US version.

That is very interesting. It could be a very good explanation for the front "floatiness" that some have reported with the Euro Eibach springs.

fourtailpipes · 06-08-2015, 04:54 PM

Quote:

Originally Posted by tr3flip

Not trying to discredit anyone, but wouldn't you want to believe the guy who works for Eibach? I have direct access to this information and know what I posted is accurate.

The Euro Spec Eibach spring is softer than OE. Don't ask why. Maybe for TUV purposes. I'm not sure. This is a huge reason why we developed our US version.

not saying i don't believe you (or anyone). i'm just trying to get to the bottom of this. an aftermarket spring having a 10% softer spring rate is unusual to say the least. is there any commentary from eibach on why they chose both a softer rate AND a lower ride height in the front for the european version? is 166 in fact the official number from eibach for the european front?

fourtailpipes · 06-08-2015, 05:02 PM

is it possible that the progressive nature of the springs is muddying these numbers and they are not in fact softer than OEM when compressed to their actual working range?

Mario_Kart · 06-08-2015, 05:40 PM

any pics of them on the m3?

tr3flip · 06-08-2015, 06:31 PM

Quote:

Originally Posted by fourtailpipes

not saying i don't believe you (or anyone). i'm just trying to get to the bottom of this. an aftermarket spring having a 10% softer spring rate is unusual to say the least. is there any commentary from eibach on why they chose both a softer rate AND a lower ride height in the front for the european version? is 166 in fact the official number from eibach for the european front?

No official comment from Eibach Germany on why. If it comes up in email I'll try and find out. I feel it's quite irrelevant at this point since we've already developed a new spring kit with preferred ride heights and rates for the North American market.

iamwingman · 06-08-2015, 06:43 PM

Quote:

Originally Posted by tr3flip

No official comment from Eibach Germany on why. If it comes up in email I'll try and find out. I feel it's quite irrelevant at this point since we've already developed a new spring kit with preferred ride heights and rates for the North American market.

Where are they brother? Between these us spec Eibachs and Bavsounds underseat sub upgrades, wonder which will cone first. Next week. Later this month. Etc. Etc....

iamwingman · 06-08-2015, 06:46 PM

Just bustin chops. But I am planning on buying both. IF THEY WILL EVER RELEASE THEM.. That is all..
..

06-02-2015, 08:07 PM	#288
Booster Pave The Rainforest 269 Rep 1,197 Posts Drives: Wagon Join Date: Dec 2005 Location: Norfolk, VA iTrader: (33) Garage List 2007 335i Coupe [0.00]	Do want... My car arrives at port tomorrow... __________________ Sold: 2015 Pyrite Brown M3 Sold: 2020 Sunset Orange M340i Xdrive Sold: 2021 Bluestone 540i Xdrive Msport
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06-05-2015, 10:10 PM	#292
manticor Lieutenant 133 Rep 501 Posts Drives: F80 built july 1........... Join Date: Aug 2013 Location: nyc iTrader: (0)	Anyone???? Euro specs va US specs for comparison please???
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06-06-2015, 07:31 PM	#293
f82mw Second Lieutenant 53 Rep 236 Posts Drives: BMW M4 MW/SO 2015 Join Date: Apr 2014 Location: Westminster iTrader: (0)	So whats the exact us drop in inches? I heard it was 1.2/0.7
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06-08-2015, 10:50 AM	#296
Jaymax85 Addicted to Speed. 714 Rep 2,375 Posts Drives: m3 zcp, macan GTS, f15 x5 Join Date: Aug 2011 Location: 'Murica iTrader: (5)	Any more pics from the side?
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06-08-2015, 11:17 AM	#297
tr3flip Private First Class 67 Rep 102 Posts Drives: E46 M3 \| E91 \| Acura TSX Join Date: Oct 2010 Location: Tustin \| Eibach iTrader: (0)	I'll post more pics as I get them. These are being sent to me from our Marketing Department. __________________ Instagram: @tonyjackson \| 2002 M3 Build Thread \| 2004 TSX Build Thread \| E91 Build Thread
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06-08-2015, 11:24 AM	#298
Jaymax85 Addicted to Speed. 714 Rep 2,375 Posts Drives: m3 zcp, macan GTS, f15 x5 Join Date: Aug 2011 Location: 'Murica iTrader: (5)	Is the drop only 6mm even for the coupe? The m4 rear needs more of a drop than that
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06-08-2015, 05:02 PM	#304
fourtailpipes Major 111 Rep 1,338 Posts Drives: the ladies crazy Join Date: Dec 2008 Location: , Location, Location! iTrader: (0)	is it possible that the progressive nature of the springs is muddying these numbers and they are not in fact softer than OEM when compressed to their actual working range?
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06-08-2015, 05:40 PM	#305
Mario_Kart Captain 398 Rep 732 Posts Drives: 328 Join Date: Oct 2011 Location: BC iTrader: (1)	any pics of them on the m3?
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06-08-2015, 06:46 PM	#308
iamwingman Major 1204 Rep 1,184 Posts Drives: 21 Carrera S, 23 Tesla Model S Join Date: Jun 2014 Location: South Florida iTrader: (0)	Just bustin chops. But I am planning on buying both. IF THEY WILL EVER RELEASE THEM.. That is all.. ..
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