E91 FSD Suspension Questions?

M_Dennis87 · 03-02-2016, 01:39 PM

OK. So, I'm relatively new here after recently purchasing my E91 and the first thing I'm looking to do is upgrade the suspension. I'd love to purchase the Koni FSD kit but am unsure on compatibility issues. I've done a lot of searches and haven't found a clear answer, so I'm not sure the FSD kit is even going to be an option for me.

I've dug around on realoem(dot)com just to see which suspension parts are interchangeable across models and it looks to me that E90-E91 suspension parts are not. However, it does appear that E91-E93 suspensions parts are. Can anybody confirm this? With that said, I was also looking into the Koni yellows and Eibach spring separately and the part numbers for the E90, E91, and E93 are the same, so that's where I'm getting confused.

Can anybody shed some light on this, or confirm that the Koni FSD kit will in fact fit my E91?

martinblair · 03-02-2016, 05:19 PM

I had looked into Koni before I decided on the Bilsteins for my E91. Pretty sure the 2100 4123FSD kit (would have confirm that number) is for the sedan, coupe and wagon.

CALWATERBOY · 03-02-2016, 08:27 PM

Quote:

Originally Posted by M_Dennis87

I'd love to purchase the Koni FSD kit but am unsure on compatibility issues.

FSD's a are designed for Sport suspension springs. If no got, HERE is an instructive read....

M_Dennis87 · 03-03-2016, 10:19 AM

Quote:

Originally Posted by CALWATERBOY

FSD's a are designed for Sport suspension springs. If no got, HERE is an instructive read....

Thanks for the info. I would be planning on going with the FSD Kit which comes with Eibach Pro Kit springs.

M_Dennis87 · 03-03-2016, 10:27 AM

Quote:

Originally Posted by martinblair

I had looked into Koni before I decided on the Bilsteins for my E91. Pretty sure the 2100 4123FSD kit (would have confirm that number) is for the sedan, coupe and wagon.

I'm not sure why I didn't check sooner, but on TireRack it's saying both 2100-4142 and 2100-4156 fit. I'm not exactly sure on the difference though... I'm looking at the 2150-4036 Kit with the springs. I might have to make some phone calls to see what struts are included in the kit.

slupie · 03-03-2016, 10:59 AM

I just bought Eibach sport springs and Bilstein B8 struts and socks for my 07 E91. Hopefully will have some time in the next two weeks to put them on.

M_Dennis87 · 03-03-2016, 11:18 AM

Quote:

Originally Posted by martinblair

I had looked into Koni before I decided on the Bilsteins for my E91. Pretty sure the 2100 4123FSD kit (would have confirm that number) is for the sedan, coupe and wagon.

Just got off the phone with Koni which was incredibly helpful. So, the 2100-4123 FSD kit is the strut package for AWD, but it's the 2100-4036 FSD kit for RWD that I need. Koni doesn't offer a strut / spring package for the wagon, so it looks like I will be buying the struts and springs separately.

Has anybody dealt with Race Consulting Agency out of Chicago? I'm not in Chicago personally, but they're offering the best prices on the parts I need by a decent chunk.

TheTallJS · 03-03-2016, 02:10 PM

I saw some selling for 650 new elsewhere

03-02-2016, 01:39 PM	#1
M_Dennis87 Private First Class 155 Rep 134 Posts Drives: SOLD:'12 E91 rwd 6mt \| '01 Z3M Join Date: Aug 2015 Location: Boston iTrader: (0)	E91 FSD Suspension Questions? OK. So, I'm relatively new here after recently purchasing my E91 and the first thing I'm looking to do is upgrade the suspension. I'd love to purchase the Koni FSD kit but am unsure on compatibility issues. I've done a lot of searches and haven't found a clear answer, so I'm not sure the FSD kit is even going to be an option for me. I've dug around on realoem(dot)com just to see which suspension parts are interchangeable across models and it looks to me that E90-E91 suspension parts are not. However, it does appear that E91-E93 suspensions parts are. Can anybody confirm this? With that said, I was also looking into the Koni yellows and Eibach spring separately and the part numbers for the E90, E91, and E93 are the same, so that's where I'm getting confused. Can anybody shed some light on this, or confirm that the Koni FSD kit will in fact fit my E91?
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03-02-2016, 05:19 PM	#2
martinblair Private First Class 31 Rep 138 Posts Drives: 2010 328i Touring Join Date: Jan 2015 Location: Edmonton, AB iTrader: (0) Garage List 2010 328i xDrive To ... [0.00]	I had looked into Koni before I decided on the Bilsteins for my E91. Pretty sure the 2100 4123FSD kit (would have confirm that number) is for the sedan, coupe and wagon.
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03-03-2016, 10:59 AM	#6
slupie Lieutenant 112 Rep 479 Posts Drives: 07 328iT, Montego Blau Join Date: May 2008 Location: Bartlett, IL iTrader: (2)	I just bought Eibach sport springs and Bilstein B8 struts and socks for my 07 E91. Hopefully will have some time in the next two weeks to put them on.
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03-03-2016, 02:10 PM	#8
TheTallJS Member 30 Rep 115 Posts Drives: Metallic Black 2006 325i Join Date: Sep 2009 Location: San Francisco iTrader: (0) Garage List 2006 BMW 325i [0.00]	I saw some selling for 650 new elsewhere __________________ Fly the BMW.
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