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5 W's - BMW E90 M3 REAR SUBFRAME BUSHINGS?
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01-06-2024, 05:23 PM | #24 | |
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Just rear ARB bushes, diff mounts and diff fluid maybe. If there is a decent improvement on handling and rear comfort (I am suffering from a lot of side to side jiggle over bumps which is a clear symptom of worn RSFB if I'm correct + the body roll on turns) then I'll look at getting the ARB links done too + other arms if and when required. |
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01-07-2024, 04:52 AM | #26 | |
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On the Lemforder Parts Catalogue website too, it says "This part is no longer deliverable by the manufacturer" - Then who is making it if they can't supply it? Maybe that's why Autodoc are out of stock too. If the Lemforder ones aren't available because they've been discontinued, then who would be the next best manufacturer? MEYLE, TRW, SACHS, FEBI, MOOG? It'd be nice to know for an option B. |
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01-07-2024, 05:03 AM | #27 |
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No, I think Lemforder has stopped making them. This is bizarre and weird, why would they do that. Where is BMW getting the RSFB for E9x models then?!
I have checked all websites Inc. amazon and eBay, no one is stocking it. That's an ashame. LEMFORDER 29812 01 LEMFORDER 29813 01 These are the Stock E90 Lemforder part numbers |
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01-07-2024, 02:35 PM | #28 | |
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01-07-2024, 03:37 PM | #29 | |
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But, this is turning out to be a sucker now as TRW and SACHS don't manufacture RSFB for this model and Febi only seem to supply 1 of the 2 bushes (rear axle-front bushing only). This is getting weird now. I think I won't be able to change them at this rate! I have a feeling that due to safety reasons, maybe BMW is telling all aftermarket suppliers to not offer bushings to promote people to go and buy the whole rear subframe instead. I Hope this is not true |
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01-07-2024, 04:08 PM | #30 |
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That'd be crazy. I bet they just don't replace many, nowadays. Most that needed it will have had it done, those which need it now can't justify Vs the price of the car or will 'upgrade'...and folks like you are stuck in the middle.
Last edited by Tambohamilton; 01-07-2024 at 04:17 PM.. |
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01-07-2024, 09:44 PM | #31 |
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imo wasting ur time going stock, its a design flaw based on comfort but the wear doesnt degrade enough that 99% of the cars dont service them or notice it. either you enjoy driving and notice it Right off the bat or After you become modified, rsfb likely arent ur main issue and inserts are enough to upgrade/restore performance but gl
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01-08-2024, 01:05 PM | #33 | |
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Febi does the the front ones but not the rear? How weird is this? What's going on? |
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01-08-2024, 01:12 PM | #34 | |
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I have test driven: 2010 E90 M Sport with 92k miles (18" standard tyres): Perfect ride, not overly crashy, didn't roll on turns and felt responsive enough, and was comfortable. 2008 E92 SE with 19" Runflats: Again, no body roll (but SE hence felt bit disconnected) and comfortable ride (bit harsh compared to 18" + standard tyres) So I expect mine to drive like that too. If it were a Mercedes I won't be complaining but its a BMW. |
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01-08-2024, 01:20 PM | #35 |
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OK - SO AUTODOC ARE STOCKING LEMFORDER M3 RSFB!
Wow - this is insane - Its almost like BMW have told their suppliers to not manufacture Stock RSFB! Lemforder Part numbers are: Front 37798 01 Rear 37797 01 I selected E90>M3 ('07 to '11) so will these be the correct ones or do I need to search for E92 M3 or are they both the same? At this rate, it seems I'll have to go for M3 RSFB |
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01-08-2024, 04:33 PM | #36 |
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E90 Vs e92 Vs e93 (and e91, though there was no e91 M3) rsfb are all the same.
I really don't think you'll regret it. Unless you're very sensitive to nvh |
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01-08-2024, 05:50 PM | #37 | |
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01-09-2024, 03:38 PM | #38 | |
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However, Ive been looking into the Febi Stock mounts further and I've come down to the reason. It appears FEBI only manufacture the front bushings (which are universal irrespective of engine type) but they only manufacture the rear bushings for PETROL engines only, hence why I couldn't see the rear ones on their website under my reg. So it appears the rear bushings are engine-specific and front ones are not. Now to make it even more complicated, Lemforder parts catalogue lists two bushings under my reg and their rear bushing is too cross-referenced with the Febi PETROL-only bushing but they are still listing it on their catalogue for my reg. Is this a part number error from factory or is it actually true - are the rear bushings engine specific?? |
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01-09-2024, 03:39 PM | #39 |
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01-09-2024, 03:42 PM | #40 | |
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The E9x chassis needs foam upper mounts unless you're on high performance shocks and springs etc. Hence why I dread what the M3 RSFB can do to my car. |
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01-09-2024, 04:00 PM | #41 | |
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01-10-2024, 04:02 PM | #42 | |
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So I'm led to now believe that this could may well be a cross-referencing error from BMW or real oem because its impossible all OE/OEMs do not make a diesel engine bushing! I think its an error and and I'm most probably going to buy the Febi ones. There's millions of 320d models here in the UK and surely folks have not all been buying direct from BMW! I'll order the Febi ones tomorrow A side question, what is wrong with Meyle? Why don't anybody recommend them? They are a reputable OE/OEM right? |
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01-10-2024, 04:34 PM | #43 |
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It's not just diesel cars; it's all diesel and 6cyl petrol that use the same rear bushings. But I agree, it's odd that so few manufacturers seem to be making them.
Meyle should be ok, but their products just don't seem to last. Good branding/marketing, crappy products. I've got a bunch of their ball joints in the back end of my car that I need to replace after 20k miles. |
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01-12-2024, 01:03 PM | #44 | |
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I really hope Febi are a good quality product. I used Febi control arms and tension arms on my 330d SE and they didn't make the car feel any worse so that's a good thing. Do Febi manufacture bushings etc for German car makers? HOW TRUE ARE THEY TO BMW SPEC? DO THEY MAKE SIMILAR QUALITY TO LEMFORDER? I'm not bothering regarding theSE rear side bushings being for petrol models only - It could be BMW slightly changing the rubber composition for the diesel models to aid longevity due to weight and NVH etc and that doesn't bother me, AS LONG AS THE HANDLING PERFORMS GOOD. |
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