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Lowering advice please

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clayjo
Posts: 13
Joined: Fri Mar 15, 2013 6:00 pm
Location: Wilton, CT

Lowering advice please

Post by clayjo » Mon Mar 05, 2018 3:26 pm

I have an 88 US 635csi and may be in need of new front struts. I have the SLS in the back and everything is still functional well (imagine that)?!

Is there a setup that allows me to lower the front a little and adjust the SLS ride height in the rear? I have 16” rims and not an overly aggressive driver.

Or if there’s already a thread someone is aware of, please point me in the right direction. Couldn’t find much with SLS components.

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Brucey
6 Series Guru
Posts: 9716
Joined: Fri Apr 09, 2004 7:17 am
Location: Cambridge, UK

Re: Lowering advice please

Post by Brucey » Mon Mar 05, 2018 5:13 pm

you can buy lowering springs for the front that will give about a 1" drop. You can make fine adjustments with the rubber spring pads. These springs work with standard length strut inserts, eg Bilstein HDs (B6). Lowering any more than that gets you into a regime where the camber angles are screwed up enough that you will likely get bad tyre wear unless corrected.

At the rear a (ghetto) solution is to simply cut a turn out of the standard SLS springs, and/or adjust the SLS ride height correction (which is on a closed loop feedback via a linkage) accordingly.

cheers
~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Bostn635csi
Posts: 40
Joined: Thu Jun 19, 2014 11:40 pm
Location: Boston

Re: Lowering advice please

Post by Bostn635csi » Tue Mar 20, 2018 9:40 pm

Hello, I bought my front springs from Ireland Engineering. Lowered front by 1".
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Kevin
1988 BMW 635csi, 5-speed
Lachsilber

SORIANOTRON
Posts: 17
Joined: Tue Oct 31, 2017 7:58 pm
Location: Honolulu

Re: Lowering advice please

Post by SORIANOTRON » Thu Apr 05, 2018 2:53 am

looks very nice man, well done =D>

clayjo
Posts: 13
Joined: Fri Mar 15, 2013 6:00 pm
Location: Wilton, CT

Re: Lowering advice please

Post by clayjo » Tue Apr 17, 2018 9:46 pm

nice one Mr. Bostn635! Do you have SLS in the rear too?

Can anybody recommend a different strut insert other than Billstein? Can't find them anywhere. Backordered from Billstein. I assume i just need the inserts?

Bilstein B6 Performance Shocks - 34-002339

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Bostn635csi
Posts: 40
Joined: Thu Jun 19, 2014 11:40 pm
Location: Boston

Re: Lowering advice please

Post by Bostn635csi » Tue May 15, 2018 2:11 am

Hello, my SLS was removed years ago. Replaced with Bilsteins and H&R springs.
Kevin
1988 BMW 635csi, 5-speed
Lachsilber

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