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[E90 Problem] M-Sport springs on 'regular' sport suspension
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09-26-2019, 11:34 AM | #1 |
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[E90 Problem] M-Sport springs on 'regular' sport suspension
My left-front spring blew this summer. So I bought a pair of used complete front shocks as a temporarily solution, it came from a non-sport e91 so my car got ridiciously high in the front compared to back, ugh
Anyway, due to several things I decided to have a workshop replace both of the springs on my original shocks (sport suspension, 'S226A') and replace them with these e91 temporarily shocks so I could look at the car again with a little smile atleast. When I picked it up (about 3-4 weeks ago) it hadn't lowered a single bit, looked even higher at first. Talked to one of the mechanics in the shop and he said a colleague had worked on it, and that they'd used M-Sport springs on it (S704A). He told me to give it at least a couple of weeks and it should be better. I've provided some pics below of what it looks like today (3-4 weeks later). I used a filter on one of the pictures to expose the tremendous wheelgap a little better. Look at the difference! What may cause this? I've tried to take a quick look to see if I notice anything obvious, but I'll have to wait for better weather before I pull off the wheels and give a proper look. Thoughts? Last edited by e90_chris; 09-26-2019 at 11:46 AM.. |
09-26-2019, 05:12 PM | #3 | |
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This will help fix your issue. Can you confirm what springs you have? The struts themselves will have minimal impact on ride height; it's mostly the springs that determine ride height. I just went through a similar issue with my front sitting much higher after strut and spring replacement, however I just went from sagging old springs to new ones which raised my car back to factory ride height which was much higher than what I was used to seeing. However, my car with non-sport-suspension still doesn't look as high as yours. |
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09-27-2019, 12:28 AM | #4 | |
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It's the factory struts up front still, sport suspension setup. I saved them cause I knew the car would get raised with the e91 non-lowered struts/damper. So they replaced the springs/shocks on my factory sport struts/damper suspension and mounted them on the car, as it was before. Removing the temporarily e91 dampers/suspension I had gotten hold of. They've just put M-Sport springs on them instead. I've got to look later today for that code, I'll come back later! |
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09-28-2019, 08:10 AM | #5 | ||
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09-29-2019, 04:58 PM | #6 |
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It's possible that they tightened the lower arm joints without the suspension loaded, though that would be an amateur mistake. I can't remember the place to look up BMW spring fitments and part nos right now...there are many variations, and realoem doesn't list them! Could be the wrong springs for your model.
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09-30-2019, 04:30 AM | #7 |
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Preloaded suspension doesn´t get the car any higher, it sound more like wrong springs to me... anyhow the described Sachs No. (Diameter 11.75mm, Length 334mm, Outer diameter 142mm) corresponds with BMW 31 33 6 767 378 and 31 33 6 767 377.
I would measure the old ones to be sure.
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10-02-2019, 04:26 PM | #8 |
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Thanks for replying!
Well that sucks, the old springs are thrown unfortunately.. They usually don't hand out your old parts unless you specifically ask for it. Thanks again though! Edit : They replaced the upper bearing part on top of the strut, as the 'e91 temporarily dampers' had better bearings. Does changing that top plate really make a difference though? Last edited by e90_chris; 10-03-2019 at 12:43 AM.. |
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10-03-2019, 02:51 AM | #9 |
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It does/could, there are different heights... Z3 is the lowest, Xdrive highest if irrc...
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10-03-2019, 12:16 PM | #10 |
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10-03-2019, 03:09 PM | #11 | |
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O'well, thanks again guys. Might need to just put some heavy weights under the hood overnight then |
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10-03-2019, 06:18 PM | #12 |
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I doubt the top mount is your problem, unless they've somehow spaced it out a load. See here (with translation) for a rundown on the comparative heights of various top mounts:
https://www.e90-forum.de/index.php?t...-e9x/&4f3b3dbc Personally I think the springs are incorrect. Maybe you could contact a BMW dealership with your vin, and ask them for the part no's for the correct springs? |
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e90, e90 suspension, sport suspension, suspension |
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