07-02-2018, 10:11 AM | #67 |
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07-02-2018, 10:28 AM | #68 | |
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I checked my guibo's (the MT has two) one on each end of the driveshaft and they look fine with no splits. The centre bearing looked good as well. I noticed the rear guibo does have a certain amount back and forth flex. Not sure if this is normal. I also noticed that there was some slight leak/spray of the Diff fluid across the undercarriage near the insert nut. |
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11-06-2018, 03:37 PM | #69 |
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Vibration Gremlin
328i / 6spd manual - 33000 mi. Since 18000 the car has this type of vibration at low to moderate speeds - starts at 42-44mph and peaks at 48-52 gradually decreasing until 68mph which is glass smooth until about 78 where it creeps up again. Starts out as a booming in the ride accompanied by a slight vibration. The dealer didn't know where to go and wouldn't start to replace parts. "if it doesn't fix it BMW won't warranty it".
Apparently, dealers only get a percentage of sales in warranty work allowance. They have an incentive not to fix things if 'iffy'. I took the car to a reputable indy shop and they dropped the exhaust and heat shields to find the center splines and yoke have 'noticeable' play that might allow the two halves of the driveshaft to move relative to each other... might this create a balance issue? Hmmm... I had noticed that accelerating and getting right up to 65 on the commute home is 'smooth' but going to work in the mornings I drive over some rolling hills at 45-55 mph and when I crest a hill and let off the gas this is when I notice it starts. None the less, dealer swapped tires and said "Smooth" - nope - still there. I've had original Conti RunCraps / Conti snows and now Michelin Pilot Sport 4s (which is a fabulous tire BTW). So it's a year since this started and my alternatives remain trying to fight it out with the dealer(s) or elect to replace the driveshaft at my cost (~$2500 with all parts and labor) or selling this car... which would be too bad since they are not selling manuals in 2019 outside of M cars. Driveshaft rebuilders can't even get the parts to rebuild these so we either buy a shaft or get the shaft. BMW Ownership experience leaves a lot to be desired in this case. Last edited by B-Spater; 11-06-2018 at 04:00 PM.. |
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11-06-2018, 04:54 PM | #71 | |
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Took it back to BMW and they said the diff was making a growling noise and advised me to change the diff. They quoted me Ł2500 for a new diff but couldn't confirm that this would fix the vibration. I managed to source a used diff that was in good condition and did the swap. It did seem to quieten the back end but didn't fix the vibration problem. It seemed to shift the vibration/hum up front more around the centre of the car around the gearbox area. The vibration gradually got worse and starting occurring around 40/50 mph to the point the car was un-driveable. I took it to 4 BMW specialists and back to BMW and no one could pinpoint the problem. In the end I ran out of ideas, patience and gave up. I just got rid of the car. It felt like I was chasing a lost cause and wasn't worth the headache trying to fix it. I know how you feel, this was the worst car ownership experience I have ever had and have been let down badly by BMW who wouldn't acknowledge the car was a lemon and insinuated that I may have caused the issue. I couldn't find anyone including BMW to really help fix the problem. The problem started after only 6k miles and was fixed under warranty then came back after the warranty expired. The car was low mileage and never abused, the car was never right for the 5 yrs I owned it. In hindsight I should have got rid of it much earlier. I have a feeling it might be to do with something around the transfer case/gearbox area. But I do really hope you manage to fix your car. Last edited by kingmonkey8; 11-06-2018 at 05:00 PM.. |
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11-07-2018, 04:22 AM | #72 |
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the issues you are all experiencing, I am having the same ones with my 2014 f20 m135i. The increasing vibrations from 40mph that gradually get worse all the way up to 100mph. I can feel this in my steering wheel, accelerator pedal, brake pedal and drivers seat.
I also have a vibrations in my steering wheel in neutral when the car is idling at 1000rpm does any one have this issue? My dealer is looking at my car tomorrow and has suggested the following three things: rod bearings low pressure ac pipe needs some dampening weight ( this pipe can create a vibration) prop shafts i have two weeks left of motorplan |
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11-07-2018, 07:52 AM | #73 |
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11-07-2018, 08:09 AM | #74 | |
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I recently spoke to the indy shop owner and asked him what he'd do. His reply, "I'd wait till it got worse or start thinking about the next car." I'd been looking around at 2017/2018 340i and 340i xDrive and found two - one's a stick with 38K and the others an 8spd auto with ~19500 miles. However, as appealing as these cars are, I just don't know if I will trust BMW again but do appreciate your good wishes. |
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11-07-2018, 08:25 AM | #75 |
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I'm a little late to the thread, but I had the same damn problem.. Just recently swapped to non-runflat mps4s tires and my vibrations were gone... I even went through the trouble of repairing my rims because I thought one was bent and causing it. Nope it was the damn run-flats. Good luck mang. Now it's smooth as f at any mph and I no longer feel scared to go faster than 80mph.
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11-07-2018, 09:18 AM | #76 | |
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The only thing left was either the transfer case or flywheel. One BMW specialist told me the same thing, wait till it gets worse and maybe it would be easier to diagnose. But it got to the point where it was getting bad to drive normally and felt like something was going to break. Unless you manage to find the cause it maybe a case of swapping parts until you hit the problem. I ended up buying another 4 series but this time with the auto box as the drivetrain will be slightly different. Hopefully this one proves be more reliable. |
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11-22-2018, 08:10 AM | #77 | |
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This one rides and runs smoothly. There is one thing I do not care for though... but I may start a new thread about "Highway Drone" at 55-60 mph - horrid, loud vacuum cleaner like sound from the engine bay in top gear / ~12-1400 RPM when applying mild throttle. Really not very BMW like. |
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11-22-2018, 01:49 PM | #79 | |
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That doesn't sound right. The 340 is supposed to be smooth. Sounds like a air/vacuum leak of some sort. Open the bonnet and see if you can hear anything, check the oil filler cap is on properly. I swapped for a 428i auto with 29k, seems to be running okay so far. There is a bit of roughness around 40-50mph but seems to be coming from the engine. Just had the car back from the dealership for a recall on the steering where they changed 4 bolts. IDK, these cars always seem to have some niggling issues with them, along with the creaks and excessive tyre noise sometimes makes me question why I bought another BMW. |
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11-22-2018, 02:15 PM | #80 |
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11-22-2018, 08:50 PM | #81 |
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I think it is, only happens under decceleeation or neutral. Horrible shaking from the rear, very unstable and not balanced at high speeds.
My f80 was very stable, not even close to this f30. This is rediculous! Class action here we come! |
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11-23-2018, 12:11 AM | #82 |
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my f20 m135i auto does all these exact things, thought it was rod bearings, but theres not bearing noises at all from the engine. We did all the knock tests and then removed the sump for a visual inspection and they they all perfect.
Its shocking its like a vibration surge as you accelerate but that same vibration is there in neutral especially at 3500rpm can feel it in the steering wheel the brake pedal the accelerator the drivers seat and body work. its been to bmw every week for the past 3 months nobody can find the issue, bmw replaced the following: water pump steering rack engine mounts vbelt and pulley aircon pipe weight clamp thing aircon pump i am starting to hate this thing. |
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11-23-2018, 04:10 AM | #83 | |
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At first it felt like it was coming from the rear and, when it first starting happening at very high speed there was some vibration felt in the chassis, even see the back windscreen shaking. BMW swapped the diff, then the driveshaft and that seemed to make a difference but then it came back after a while. There was no shake to the steering wheel, car or seats. |
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11-23-2018, 06:18 AM | #84 |
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Same here at high speed but if I take my foot off the accelerator it goes away, comes back when the accelerator is again pressed.
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11-23-2018, 09:32 PM | #85 | |
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11-27-2018, 08:08 PM | #86 | |
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Even the the replacement 428 I've got now is not perfect, just noticed a kind of low level whistling noise from the passenger side. Sounds like either the brakes are rubbing slightly or a noisy bearing. But it's not that noticeable and doesn't seem that major so not even going to bother with it for now. The steering felt a bit loose and although the car did track straight I was having to make tiny adjustments to the steering. Also the adaptive suspension felt a bit soft and wallowy. Put more pressure in the tyres and it's driving much better now. I managed to track down my previous car for sale and I believe it's been sold but I hope that they fixed the vibration issue and good luck to the new owner. If it has been fixed I would still be curious to know what was fixed what the issue was that's been giving me so much grief for the last 4 yrs. |
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11-28-2018, 05:02 PM | #87 |
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I cannot help wondering if some of you have a genuine vibration whereas others are suffering the F30 drone. I have heard/felt that in two cars at almsot identical speeds. This guy fixed his drone in a novel way, and others have had to get the undertray pieces padded. https://f30.bimmerpost.com/forums/sh....php?t=1512190
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11-29-2018, 06:44 PM | #88 | |
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But mine was a genuine vibration. When it first started happening it was definitely coming from the rear end. When you pushed the car faster you could see the back windscreen blurring in the mirror so definitely a vibration from the back end. It's been into the BMW dealership and also other BMW specialists on a number of occasions, surely they would have checked the undertray if they were aware of it. After swapping out a number of components the hum/drone did feel like it moved upfront to around the centre of the car somewhere near the transfer case/gearbox. But it gradually got worse and at lower speeds. It was more of a low frequency hum and was always there at lower speeds but not as noticeable. But for anyone suffering from vibration issues it's definitely worth checking the undertray as well. |
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