[NiNeTyOne]

Because there seems to be some confusion as to which Eibach Pro springs fit the Koni FSD's I thought I'd post a PSA on the actual Eibach part numbers & F/R lowering figures for the xDrive cars.

e90 328/330 xDrive = E10-20-014-08-22 Lowers 30mm/20mm
e91 328 xDrive Sportwagon = E10-20-014-10-22 Lowers 30mm/25mm
[corrected]

Suspension Direct has all of these for around US$250.

this will all work with the corresponding FSD's form Koni.

These springs can be purchased from Suspension Direct in the UK or from a host of vendors on eBay.de. Note that the exchange on both the GBP and Euro are very favorable right now.

Koni Complete FSD kit 2100 4123 fits all xDrive variants.

Race Consulting Agency has the kit above which retails for $1,262.00 now for $649.00.

[TEC]

How does this setup compare to something like KW 2's?

[NiNeTyOne]

Originally Posted by TEC

How does this setup compare to something like KW 2's?

These are not adjustable coilovers, and frankly I don't want to get into a discussion on KW's other than to say that the v3's would be the only thing I'd ever consider. Even then, at that price point, there are far better setups out there, so that consideration would be very brief.

FSD/Eibach option ~ $900 depending on vendors.
V2's are $1800+
V3's are $2500

We're talking apples to honeydew melons.

If you talk to any of the really good race shops out there that also do road application stuff (and are factory certified to rebuild/revalve the main players), they will tell you that for a street application it's pretty much FSD's at the <$1250 price point and Ohlins DFV's with ERS springs for the <$3500 price point. PSI (aka Performance Shock at Sears Point Raceway) comes to mind.

The DFV R&T's aren't yet available on xDrive (though we're trying to figure that out), and they are in the $1900 ballpark.

If I had an RWD car it would be my choice hands down. There's nothing else even close till you start spending big money, and then you're into the TTX series dampers, also from Ohlins.

People talk about the FSD's being floaty, but since 2008 or so pretty much every one I've driven have been really good. So good I put them on the e91 while we work on figuring out the front Ohlins solution. They feel softer than others at a similar price point, but it's largely because of the dual valve design which allows selective isolation of the various high and low frequency inputs to the shock. They actually do a much better job of keeping the tire in contact with the road than older monotube designs. On track testing has confirmed this over and over again.

I've had them well north of 100mph and the car is rock solid on the FSD Eibach pro setup.

My personal feeling, having driven or raced on a lot of different setups, would be to consider suspension in this order of preference:

Budget Street setup - FSD's with Eibach Pro springs
Road and frequent track - Ohlins R&T DFV w/Eibach ERS (or the person who wants a stunning street setup)
Pure track/race - Ohlins TTX 46 w/Hyperco Carbon bellows springs (we're talking gutted car, cage, etc.)

[BigHoncho]

Originally Posted by NiNeTyOne

e90 328/330 xDrive = E10-20-014-08-22 Lowers 30mm/20mm
e91 328 xDrive Sportwagon = E10-20-014-10-22 Lowers 30mm/25mm
e92 328/330 xDrive = E10-20-014-12-22 Lowers 35mm/25mm
e92 335 xDrive = E10-20-014-13-22 Lowers 35mm/25mm

There is no E92 335 xdrive solution from Eibach. Those are the proper part numbers:

[NiNeTyOne]

Originally Posted by BigHoncho

There is no E92 335 xdrive solution from Eibach. Those are the proper part numbers:

There is actually, and the PN's I posted are the Europe PN's not the NA ones, so you should see these in Germany as well. The PN's I posted are for the 4 spring kit, not the individual PN's for front and rear.

Here's a link to the four spring kit from a distributor in the UK: Suspension Direct

[l3rett]

Originally Posted by NiNeTyOne

There is actually, and the PN's I posted are the Europe PN's not the NA ones, so you should see these in Germany as well. The PN's I posted are for the 4 spring kit, not the individual PN's for front and rear.

Here's a link to the four spring kit from a distributor in the UK: Suspension Direct

There is nothing about those springs being for xdrive equipped vehicles. They might work but they are not designed for them. Likely they will result in too much drop in the front.

[NiNeTyOne]

Ah you're right on the e92, good catch. I'm amending the top post.

[rothwem]

So the xDrive and non-xDrive cars use the same front spring?

Where did that chart come from?

[TEC]

Originally Posted by l3rett

There is nothing about those springs being for xdrive equipped vehicles. They might work but they are not designed for them. Likely they will result in too much drop in the front.

Looking at the chart that was supplied in the first post, shouldnt the e91 xdrive springs fit the e92 xdrive? Every other spring manufacturer I have seen lumps them all together.

[l3rett]

Originally Posted by TEC

Looking at the chart that was supplied in the first post, shouldnt the e91 xdrive springs fit the e92 xdrive? Every other spring manufacturer I have seen lumps them all together.

There are a number of differences between the 90/91 and the 92/93 models (different designers). Generally they are more cosmetic (i.e. Bumpers) but it seems there are some differences of the non cosmetic sorts too.

I'd bet the springs would fit but might not be quite correct in some way. I'd probably never notice the difference.

[Polish_Pounder]

subd

[rothwem]

Originally Posted by TEC

Looking at the chart that was supplied in the first post, shouldnt the e91 xdrive springs fit the e92 xdrive? Every other spring manufacturer I have seen lumps them all together.

The back of the E92 is lighter than the E91, so the spring rate is probably lighter.