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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Eibach pro kit and shocks



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      09-14-2011, 08:21 PM   #1
DRed60
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Eibach pro kit and shocks

I was planning on getting the Eibach pro kit springs installed and leaving my stock shocks. I have ben rethinking this as of late due to some reviews and comments I have read on this forum. There has been a lot of talk about the ride being rougher than stock when the roads are at all bumpy due to the pairing with stock shocks. I also understand that the Eibachs will cause the shocks to wear out more quickly.

I put eibachs on my last car an Audi a4 with the stock shocks and loved them. The ride was great. I did have to replace my shocks 60k miles after the eibachs were installed but that didn\'t strike me as anything crazy.

Any thoughts and or advice would be greatly appreciated.

Thanks,
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      09-14-2011, 08:22 PM   #2
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I forgot to mention my car is a 2007 335xi sedan.
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      09-14-2011, 11:44 PM   #3
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I forgot to mention my car is a 2007 335xi sedan.
I have them on my xi. Drop is perfect. About 1.5 finger gap to middle of fender. Ride isn't that harsh. I'm removing them for winter. Would u be interested buying them?? I'm planning on getting coilovers. Going more extreme.
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      09-15-2011, 08:30 PM   #4
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Springs

I am interested, but I still want to do a little more research to make sure i would enjoy them. How much do you want for them?
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      09-15-2011, 08:37 PM   #5
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Its not rough at all

Yes your shocks will wear out more quickly but it won't be tomorrow or 3 weeks time.

If this was a crap option so how many people wouldn't have done it and so many people wouldn't continue to do it - it's a cost effective solution that provides a good drop for aesthetics + lower centre of gravity which offsets the bad points being shocks wear out slightly quicker and the feeling of the car being 'underdamped' over undulating roads.

If you can afford coilovers, go with that.

Otherwise put the springs in and see how you feel, you can always upgrade shocks later to the Koni FSDs which work very well with the Eibach Prokit.
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      09-15-2011, 10:51 PM   #6
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Thanks, that helps. I am thinking if the dampening didn't bother me in my a4 I don't think it will be an issue in the 335.
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      09-16-2011, 01:27 AM   #7
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From what I've researched, the spring rate of the eibach pro-kits closely match the spring rate of ZSP springs. So if you already have a sport suspension to start, then only swapping in eibach springs and leaving the stock shocks wouldn't cause premature wear. But in my case, my stock is non-sport suspension. With a lower spring rate, the eibach's would most likely affect the dampers in respect to rebound on dips, potholes and speedbumps. The would most likely cause premature wear as well, but nothing like tomorrow or next week like another member said.

But it then comes down to cost. You have to assess, how many miles do you already have on your stock shocks?? Only 5K, then you can probably get away with leaving the stock shocks for a while. 50K? then you might want to consider upgrading your shocks. That's what I ended up doing, and got me some BMW Performance shocks. 2 more days and I finally get this done! Can't wait!

Good luck OP
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      09-16-2011, 02:14 AM   #8
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It's not just spring rate that causes accelerated wear, it's the fact that the shocks are constantly being compressed more (at rest) because of the shortened springs.
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      09-18-2011, 11:33 AM   #9
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I do have the stock non sport suspension and my car has 50k miles. Any idea how long the stock shocks normally last if the car is not lowered?
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      09-18-2011, 04:06 PM   #10
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Quote:
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I do have the stock non sport suspension and my car has 50k miles. Any idea how long the stock shocks normally last if the car is not lowered?
Hard to gauge exactly. Depending on your driving conditions, roads, passenger weight, driving habits, etc, etc. Could last 10k could last another 30K.
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      09-20-2011, 07:30 PM   #11
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Quote:
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I do have the stock non sport suspension and my car has 50k miles. Any idea how long the stock shocks normally last if the car is not lowered?
On my previous car which was a e46, I had 150K miles on the stock shocks and the car was not lowered.
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      09-22-2011, 10:36 PM   #12
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Anybody selling eibach pro kit for 2007 335i sedan in palm springs CA area
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      03-07-2012, 11:14 AM   #13
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I have an non-sport suspension E92 coupe. How much drop does the eibach pro kit give the car?
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