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09-15-2017, 05:59 AM | #1 |
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My recently purchased, lightly-used M3 has vibration and slack in the drivetrain
Apoligize in advance for my poor English writing.
So i just bought a almost New m3 competition. The car had been used by the bmw headquarters here in Norway, but had only done about 3000 miles when i got it. I used to work at a BMW dealership so i got a pretty fair deal on the car. Had the car for about 2 months now, and allready from the start i noticed a slight vibration from the steeringwheel under Acceleration between 50-75mph. The Whole car makes a slight vibration, but it can best be felt from the steering. (almost like lane departure) At first i thought it came from the lack of traction or something. I allso detected a bit of slack in the drivetrain from stand still. If i Lock the gear and go on and off the Accelerator, the car seems to "jump" or hesitate before giving me the full Power, feels like there is some slack somewhere. I got more aware of this after test driving a 2018 M3 With 1500 miles on it. The 2018 was so Sharp and smooth to drive. No slack of any kind, and was totally different to drive! So i got one of the mechanic out to test drive both mine and the 2018 car. He agreed that it was night and day. At the end of the day, the result was to order a New diff. But im afraid it could be so much more, after Reading several horror stories on the drivetrain on these cars. Have anyone found a solution to this vibration problem. or the drivetrain slack? |
09-15-2017, 08:18 AM | #2 |
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I have the very same issue. Two years already. I can say one thing to You - BMW will do nothing with this. You need to used to it and live with it. They completely don't know what is going on - they will probably change lots of parts in your car and at the end will say - car is ok, no issue at all and vibration is normal because it is M3. My issue is not solved and I stuck with "shaking" car... There is lots of threads about vibration issue...
For example: http://f80.bimmerpost.com/forums/sho....php?t=1409452 Good luck! |
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09-15-2017, 09:05 AM | #3 |
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First thing you need to do regarding the vibration is to check your tires and rims for any imperfection (both sides) and have them re-balanced if you have not done so already. Wheels being unbalanced or too worn (there are bumps between the treads that will cause vibration when time to change) are often the culprits of vibration. Next thing to look at would be wheel alignment, then bearings, then suspension components.
I'm not sure enough is known regarding your slack/lag experience and assuming you have a DCT, I don't have enough experience with those to help if it is part of the issue.
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09-15-2017, 12:04 PM | #4 |
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i would definitely try to get it resolved especially under warranty. If anything then potentially consult a lemon law attorney? Not sure if you have lemon law protections where you are...
In any event, I would never just accept the issue and live with it. Vibration at the wheel alone would annoy the heck out of me. |
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09-18-2017, 03:54 AM | #5 | |||
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It is not a Wheel vibration issue. Have checked the Balance, and there is no issue there. Just put on the Winter Wheels, and have the exact same problem now... Quote:
Not exactly sure what lemon Law is? but we have a Law here that says if they try to fix a certain problem more than 3 times, you have the right to get a New car. I am not 100% sure exactly how it Works, but i will definitly look into it! I refuse to live With this vibration thing, especially when i know its not suposed to be there! |
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09-18-2017, 04:50 AM | #6 |
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They changed: all wheel hubs with bearing, left carrier, steering rack, driveshaft, differential... No change at all...
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09-18-2017, 06:45 AM | #7 | |
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Seems like this happend to a lot of MY17? |
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09-18-2017, 07:26 AM | #8 |
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Hmmmm.... used by BMW headquarters, used for the ///M driving schools maybe...
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09-18-2017, 11:20 AM | #9 |
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From a diff thread:
I had the exact same issue. The speeds you mentioned are exactly the speeds I experienced it at. And that is the best way to describe it - it is as if the lane change vibration is constantly on. They opened a PUMA case and flew in engineers from Germany as this east the first occuranc of this issue and they were intent on resolving it. Turned out the main culprit was the connection with the CF driveshaft. Once they replacing the connectors and then adjusted the driveshaft (there are three possible settings they told me) then it resolved the issue. The repair bill was $37k CDN! It took many weeks to troubleshoot, but in the end it was resolved. |
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09-18-2017, 02:48 PM | #13 | |
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09-18-2017, 08:12 PM | #16 |
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09-18-2017, 08:22 PM | #17 |
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09-19-2017, 01:21 AM | #18 | ||
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09-19-2017, 05:00 AM | #19 | |
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https://www.bmw-drivingexperience.co...ningsorte.html
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09-19-2017, 08:02 AM | #20 | |
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Either way it shouldnt matter. I was planning on tracking the car myself, and these cars are built for this kind of driving. |
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12-03-2020, 02:59 PM | #21 | |
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12-03-2020, 08:04 PM | #22 |
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I have had both F30 340i with the B58 and F80 M3 - have experienced on both and fixed them both.
If your tires are > 2 years old or have > 20k miles on them - can almost bet it is the tires. These OEM tires don't last very long, but they are good performance-wise - or you have lost a balance weight. That can happen pretty easily and I know some db jerks that like to knock them off of cars that have room to do so. Then your biggest worry with new tires is how badly the idiot replacing your tires is going to gouge up your rims when replacing - I can say this used to happen every single time I had tires replaced. I have realized you must do a before inspection with the rims and the installer. |
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