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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Need Advice: Lowering Spring



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      05-24-2009, 09:25 AM   #1
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Post Need Advice: Lowering Spring

Hi Guys,

I just got my new 19" rims installed on my E90 Sedan today. It looked great however I have a feeling that it needs a bit of lowering....

Currently there is a 2 inches gap between the tires and the fenders curve.

My Aim:
To lower it a bit without ruining my suspension/shocks.
To keep the ride as soft as possible. (Closest to original feel of ride)

My quesions:
1. Do you recommend I should lower it?
2. If yes, is Eibach Pro Kit Springs any good?
3. If not, what do you recommend?

Thanks in advance....

Mark
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      05-24-2009, 09:41 AM   #2
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tsong, if you want a subtle drop go for eibach sport. But for a decent drop, go for h&r sport. 1.2 in front and 1.3 in the back. Those are good but it sacrifices the ride feel. If you can't tolerate that go for a spring/shock combo or the best thing, a coilover setup.
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      05-24-2009, 12:09 PM   #3
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Your best option would be either the Eibach Pro Kit or H&R Sport Springs. Either one will be a stiffer setup than your factory springs and will put more wear on your stock shocks than the OEM setup. However, they are among the softest aftermarket springs that will lower the car and improve handling without being too aggressive for daily use.
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      05-24-2009, 12:19 PM   #4
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im in the exact same boat. do the non oem springs void warranty of any kind? how much more uncomfortable is the ride? how much will handling improve? will the shocks last me atleast 30k so i can trade it in?
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      05-24-2009, 01:09 PM   #5
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I currently have the Eibach Pro-kit springs installed along w/ the Koni FSD shocks/struts. The car is equipped with the OEM sport suspension.

The Eibach springs lowered the car about an inch in the front and a little less in the rear.

The H&R sport spring will bring it down about a 1/4" inch more.
The H&R race springs bring the car down about 2" in the front and just under 2" in the rear.

I am having my springs changed out to the H&R race springs next week as I want the lower/aggressive stance. The Koni FSD shocks/struts really give a great ride and will work well with the new springs.

Be aware that if you change the springs on your car and retain the factory shocks that you will cause the stockers to deteriorate quickly. The stock shocks/struts are calibrated to work with the OEM spring's height. If you decrease that height your stock shocks/struts won't be able to compensate properly causing poor ride quality and even advanced tire wear.
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      05-24-2009, 03:41 PM   #6
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Quote:
Originally Posted by ToadHollow View Post
I currently have the Eibach Pro-kit springs installed along w/ the Koni FSD shocks/struts. The car is equipped with the OEM sport suspension.

The Eibach springs lowered the car about an inch in the front and a little less in the rear.

The H&R sport spring will bring it down about a 1/4" inch more.
The H&R race springs bring the car down about 2" in the front and just under 2" in the rear.

I am having my springs changed out to the H&R race springs next week as I want the lower/aggressive stance. The Koni FSD shocks/struts really give a great ride and will work well with the new springs.

Be aware that if you change the springs on your car and retain the factory shocks that you will cause the stockers to deteriorate quickly. The stock shocks/struts are calibrated to work with the OEM spring's height. If you decrease that height your stock shocks/struts won't be able to compensate properly causing poor ride quality and even advanced tire wear.
thanks for the info. so keep my stock springs unless im getting aftermarket shocks
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      05-24-2009, 04:05 PM   #7
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Quote:
Originally Posted by ToadHollow View Post
I currently have the Eibach Pro-kit springs installed along w/ the Koni FSD shocks/struts. The car is equipped with the OEM sport suspension.

The Eibach springs lowered the car about an inch in the front and a little less in the rear.

The H&R sport spring will bring it down about a 1/4" inch more.
The H&R race springs bring the car down about 2" in the front and just under 2" in the rear.

I am having my springs changed out to the H&R race springs next week as I want the lower/aggressive stance. The Koni FSD shocks/struts really give a great ride and will work well with the new springs.

Be aware that if you change the springs on your car and retain the factory shocks that you will cause the stockers to deteriorate quickly. The stock shocks/struts are calibrated to work with the OEM spring's height. If you decrease that height your stock shocks/struts won't be able to compensate properly causing poor ride quality and even advanced tire wear.






hopefully i did it right ive never posted pics on this...
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      05-24-2009, 04:06 PM   #8
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oh my car has h&r race springs
i forgot to put that in...
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      05-24-2009, 04:12 PM   #9
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I'd recommend H&R sport. I didn't notice a difference in ride quality at all.
The drop was perfect also. Here's a pic of my car
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      05-24-2009, 05:07 PM   #10
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Quote:
Originally Posted by roozie2001 View Post
thanks for the info. so keep my stock springs unless im getting aftermarket shocks
Yup, it's all or nothing for the most part.
Others have changed the springs and not the shocks and suffered premature damage/deterioration to the OEM shocks along with the tire wear.
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      05-24-2009, 05:09 PM   #11
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Quote:
Originally Posted by 323devnd32 View Post






hopefully i did it right ive never posted pics on this...
Nice ......... that's where I'll be with mine. What brand of shocks do you have installed?
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      05-24-2009, 05:19 PM   #12
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heres a pic of H&R sport on a sedan.. my first choice was eibach but im glad i went w/ H&R instead ride quality ain't bad..
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      05-24-2009, 05:29 PM   #13
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Quote:
Originally Posted by ToadHollow View Post
Nice ......... that's where I'll be with mine. What brand of shocks do you have installed?
right now stock because i just put them on about a month ago but im buy some new shocks but i dont know which ones to buy? any suggestions? which ones are you getting?
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      05-24-2009, 05:30 PM   #14
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Quote:
Originally Posted by zerox_guru View Post
heres a pic of H&R sport on a sedan.. my first choice was eibach but im glad i went w/ H&R instead ride quality ain't bad..
zerox_guru i think i parked in back of you at bimmerfest haha
check out my album and i think theres a pic
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      05-24-2009, 05:34 PM   #15
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^ i remember now.. we were parked back to back.. lol..
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      05-24-2009, 05:37 PM   #16
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haha ya what a trip.
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      05-24-2009, 05:43 PM   #17
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I'm guessing you don't have sports package with a 2 inch gap. If you don't have sports package, then I wouldn't recommend simply swapping out your springs. I would do a full springs/shocks or a coilover kit.
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      05-24-2009, 05:44 PM   #18
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^ well hope to c ya on a next meet or something..
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      05-24-2009, 05:46 PM   #19
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cool 4sure
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      05-24-2009, 06:19 PM   #20
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Quote:
Originally Posted by ToadHollow View Post
Yup, it's all or nothing for the most part.
Others have changed the springs and not the shocks and suffered premature damage/deterioration to the OEM shocks along with the tire wear.
What about with OEM ZSP shocks, still no good?
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      05-24-2009, 06:49 PM   #21
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Zerox did you ever switch your shocks, or are the still stock?
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      05-24-2009, 07:06 PM   #22
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Quote:
Originally Posted by DELLY View Post
What about with OEM ZSP shocks, still no good?
Even more so with the ZSP since they are un upgrade to the OEM suspension. OEM suspension is tuned to work as a "single unit". You risk causing other problems as listed above in just changing the springs and not the shocks.

You can change the shocks and not have these risks since they are able to compensate/adjust for the height of the spring ......... just not the other way around.

By the way, here's the ride height of the sport suspension coupled with the Koni FSD shocks & Eibach Pro-kit springs.
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