10-25-2023, 05:46 AM | #1 |
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Rear shock absorbers?
First time user, hope this is posted in the correct section. Has anyone had the problem of F48 rear noise when going over speed humps? The noise only comes on when the outside temperature falls below 20degrees celsius. Could it be the rear shocks? Thanks….
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10-25-2023, 01:34 PM | #2 | |
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I don't think it's related to temperature (~20* celsius is pretty normal). I would think it's tear & wear, either from the shocks or the springs. Or it could be the hub. Hard to tell.
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10-25-2023, 03:04 PM | #3 |
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It's an S drive, diesel, 2016 with 65,000 miles. It really seems to be temperature related as on hotter days ( in Spain ) the noise is not there, as soon as we have a cold spell it's right back. What do you mean the hub? Thanks.
Last edited by Nicoparko; 10-25-2023 at 03:05 PM.. Reason: Missed out word - diesel |
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10-25-2023, 03:19 PM | #4 | |
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I recommend going to an indy shop; it could be the shocks, but it could also be the control arm bushes, wheel bearing, swaybar end links, etc. Worth mentioning that with 65k miles, your shocks must be almost gone.
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10-26-2023, 01:48 AM | #5 |
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Ok, jrveron, many thanks for your input. Looks like there are a whole bunch of potential items there to change before we find the reason. One more question please, where did you find the picture of the rear suspension, is it available online? Thank you.
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10-26-2023, 05:01 AM | #6 |
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Does anyone know if these rear shockers are gas filled or oil filled? Thanks again.
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10-26-2023, 10:48 AM | #7 | |
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You can find that info in RealOEM. Here's the link for my X1: https://www.realoem.com/bmw/enUS/par...F48-BMW-X1_20i. You need to chance version since yours is Diesel, but as you know, we share most of the parts. You will be able to see the part number for the rear shocks. Keep in mind there are different parts for regular, M-Sport, or VDC suspension. BTW, they are oil-filled.
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10-26-2023, 10:56 AM | #8 |
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Thank you so much jrveron, very kind, regards…..
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10-26-2023, 11:03 AM | #9 |
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Any time!
Please let us know when you resolve it. It could be a reference for other users experiencing similar issues.
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10-26-2023, 04:14 PM | #10 |
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Of course.
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10-27-2023, 05:59 AM | #11 |
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I'm busy looking at replacing my rear shock absorbers for my 2016 f48 and most for sale seem to be gas filled. Does anyone know of it matters if you fit gas or oil filled ones? Thanks.
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10-29-2023, 08:57 AM | #12 |
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I only realized my rear right strut was making noise on bumps. Mechanic told me possible strut seized and now only the mount and bushings are taking the hit. Well, spring was doing its job, bouncing. That could happen after car was hanging off the lift for longer period of time. Couldn’t be bothered as I’ve ordered new sets of Koni struts due to change on Dec.
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10-30-2023, 02:12 PM | #13 | |
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In simpler words, "gas-filled" shocks are better than only "oil-filled". As you know, Bilstein is one of the most known brands for shocks, but they tend to be cheaper than OEM. For example, for my X1 with M-sport suspension, the rear shock absorber is 33506886762 (yours will be different).
I highly recommend Bilstein over other brands. Right now I have some Koni Sport, but they don't work with my lowering spring setup. I should go with Bilstein B8 instead. As a thumb rule:
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10-31-2023, 06:34 AM | #14 | |
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Thank you so much, so knowledgeable….. |
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10-31-2023, 11:44 AM | #15 | |
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Thanks for this How much stiffer is the B6 compared to B4. Currently on normal suspension but mine will need replacement somewhere in 2024 I will expect… |
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10-31-2023, 01:12 PM | #16 | |
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In my experience, with the B6/B8, the feeling is more like a sedan (considering the differences, of course), more if you have lowering springs like me. Some reading food: https://suspensionlist.com/bilstein-...-your-vehicle/
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10-31-2023, 01:35 PM | #17 | |
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10-31-2023, 01:50 PM | #18 | |
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IMO, the X1 (F48) isn't a proper "X" vehicle (probably I have E84 nostalgic? ); that's why lowering it makes sense.
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10-31-2023, 02:36 PM | #19 | |
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Fair point aswell but why buy an X1 and not a 3’ series touring then? Sometimes I camp in nature and drive forest roads, then ride height comes in handy but how often are that roads that wouldn’t have gone with a 3’ series? Following that argument, I could lower my X1… |
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11-01-2023, 10:39 AM | #20 | |
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And, of course, I never offroad with it, only some (light) dirt roads. Without xDrive and the low ride height, I wouldn't dare, haha. So for a city car, it works just fine.
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02-12-2024, 05:32 AM | #21 |
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Hello, I finally got to the bottom of the noise on my F48 when going over speed humps. I had the engine mountings replaced as they were in poor condition but this didn't cure the noise. The noise was actually from the front n/s strut, somehow transferring noise to the rear. Anyway, 2000€ later and 2 new front shockers and bearings, boots etc. the noise is gone. Thank you to all for your input and help.
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