Vibration issue during heavy acceleration

[sky03]

Hi everyone,

I just sign up this forum and need your help. I have driving M cars for nearly 8 years. I had E86 MZ4, E92 M3 and finally I bought 2014 F82 M4. I really have experience with M cars and still having new pleasure for every moment while I am behind the wheel.

Sadly now I am having problem with my F82 M4... The car is vibrating under heavy acceleration (more than half pedal), specially the vibration is felt in 3rd and 4th gear around 3000-5000rpm when the car reach maximum torque. As I felt there is no power loss. When I pull back the acceleration the car is not vibration at the same speed, only under heavy acceleration. Also the vibration is coming from under-middle and back of the car and it can also be felt from the seats and slightly under the pedal.

She is in 24.000km and stock (no tune, no springs etc.) now. But I know previous owner, which is my friend, had gintani ecu just for 2 months. We checked the engine and there isnt any engine fault and misfiring etc and also had wheel alignment and balancing just yesterday.

Also we checked the under it, engine and differantial mounts seems ok.

In my experience it could be the driveshaft.. I know that some cars recalled because of the driveshaft.

Maybe you guys have chance to experience or heard something near to this problem...

[sky03]

Hi again,

I know no one interested the topic but, I just want to write that we have found the problem. At least maybe some one will have this problem and can get benefit from here.

The problem is differential. we changed it and the all vibration is gone.

But the thing is, on the first 2000km maintenance authorized service put wrong diff oil which is 83222282583. All you know, this oil is used for the older M, but the ETK is not giving for the f8X. Correct dif oil number is 83222365988.

With this oil the car has been droven nearly 22000km.

Now they are investigating, can this cause the problem.

[georgere]

Thank you for sharing. This info is very helpful.
Did you have to change the differential or just the oil in it for the vibration to go away?

[horsepower_and_hounds]

Interesting.....When I am doing my WOT pulls, 3rd & 4th gear there is a vibration thru the car also. Not smooth as my modified M235i was....but then there is a lot more hp. Always wondered if there was any issue. I will keep an eye on it

[sky03]

Originally Posted by georgere

Thank you for sharing. This info is very helpful.
Did you have to change the differential or just the oil in it for the vibration to go away?

First we changed the oil to try, but the vibration was still there. After this we changed the differential.

Also we have to change the shaft too cause my car's production date is 03/2014. After 04/2014 productions, product numbers of diff and in conjunction with this, product number of shafts are changed. Shafts gets little longer 1474 to 1477mm.

My car's diff is no longer in production so we have to change the shaft too.

Now I am just waiting, who is gonna pay this.. cause guarantee of the car past 6 months ago.

[sky03]

Originally Posted by ehagerty

Interesting.....When I am doing my WOT pulls, 3rd & 4th gear there is a vibration thru the car also. Not smooth as my modified M235i was....but then there is a lot more hp. Always wondered if there was any issue. I will keep an eye on it

On my issue, the vibration came/felt from back side of the car, and slightly noise like something spinning with difficulty(not like rattling).

[georgere]

Please update the thread if BMW covers the repairs. And if it does what arguments you had to use. I once tried the to do good will repair 2 months after my warranty expired but they denied.

[scash62]

Let me know what you find out. I just purchased a 2016 F80 BMW with 5,000 miles and it was used at the performance center so I know it was driven hard. I also saw an issue with noise from rear, and they replaced a wheel bearing.

Since I read about this history, I have been listening and feeling and I also noticed a vibration when I would accelerate, almost like the vibration that you feel when the lane change notification feels like when you drift out of lane.

I did not know it that is the way all M3 and I am just being anal, or should it be smooth like I would expect for a car of that caliber.

I have a separate post tracking the updates on my issue. BMW has replaced the transmission, transmission mounts that did not resolve and now waiting for a new differential to come in.

See info here:
http://f80.bimmerpost.com/forums/sho...7&postcount=12

[shahano]

crazy how the wrong oil can destroy a diff.

[sky03]

After a long discussion with the distributor, they got back the car to change the diff and shaft free of charge.

I can not say anything about wrong oil cause this problem but we argue that, neither in the etk nor in their any system or data don't give that oil which they used. So they accepted problem.

Now I have to wait the part nearly 3 weeks, I will update when all things are done.

[2015M4inCT]

Originally Posted by sky03

After a long discussion with the distributor, they got back the car to change the diff and shaft free of charge.

I can not say anything about wrong oil cause this problem but we argue that, neither in the etk nor in their any system or data don't give that oil which they used. So they accepted problem.

Now I have to wait the part nearly 3 weeks, I will update when all things are done.

Curious how this worked out for you. I have a 2015 M4 I picked up 3 weeks ago with just 17,400 miles and I am noticing similar behavior between 60-80MPH in 4th gear when accelerating. The whole car vibrates a bit and I believe it only happens under acceleration load but need to test that theory more tomorrow. Will be calling the dealer tomorrow to see how they are going to address. Reading other threads seems this can be a very difficult issue to track down and one other person had BMW/dealer buy their car back after swapping out wheels, tires, bearing, drive shaft, DCT tranny, etc. etc. Yikes...

[48Laws]

Not really related but i just had my ‘15 F80 W/16k miles rotators and brakes replaced under warranty. Car was vibrating under braking. Car was in the shop just one full day. Love BMW.

[Ferg]

Hmmmm, I've noticed this as well on a MY15 with 40,000 miles.

[omega2733]

I have noticed this as well on my '17 with 12k miles. Still need to do the driveshaft recall - guess I'll keep watching this. As a side note I wasn't getting this vibration 1,000 miles ago.

[Poiseuille]

Originally Posted by sky03

Hi again,

I know no one interested the topic but, I just want to write that we have found the problem. At least maybe some one will have this problem and can get benefit from here.

The problem is differential. we changed it and the all vibration is gone.

But the thing is, on the first 2000km maintenance authorized service put wrong diff oil which is 83222282583. All you know, this oil is used for the older M, but the ETK is not giving for the f8X. Correct dif oil number is 83222365988.

With this oil the car has been droven nearly 22000km.

Now they are investigating, can this cause the problem.

Sorry I missed this thread when it first appeared, but glad to hear you got a new diff and shaft out of it anyway. I'd like to ask a few questions about this though: so you purchased this car from your friend as a used car. I assume that means that it was your friend that brought the car in for the 1200/2000 service. How many Km did the car have on it when you bought it? The car went 22,000 Km before the diff failed, is that correct? How was it determined that the incorrect lubricant was in the diff from the previous service? Was that found during inspection of the failed diff? again, thanks very much for taking the time to post all this, certainly appreciated.

[2015M4inCT]

Originally Posted by 2015M4inCT

Curious how this worked out for you. I have a 2015 M4 I picked up 3 weeks ago with just 17,400 miles and I am noticing similar behavior between 60-80MPH in 4th gear when accelerating. The whole car vibrates a bit and I believe it only happens under acceleration load but need to test that theory more tomorrow. Will be calling the dealer tomorrow to see how they are going to address. Reading other threads seems this can be a very difficult issue to track down and one other person had BMW/dealer buy their car back after swapping out wheels, tires, bearing, drive shaft, DCT tranny, etc. etc. Yikes...

I tested this a bit more today and it's pretty much any gear from 3 on up where the vibration is noticeable with moderate to full acceleration between 60 and 80MPH. Definitely doesn't happen when off the throttle and coasting and definitely not when braking. I have an appointment setup with a dealer in a week.

[MrSmartyPants]

Originally Posted by 2015M4inCT

I tested this a bit more today and it's pretty much any gear from 3 on up where the vibration is noticeable with moderate to full acceleration between 60 and 80MPH. Definitely doesn't happen when off the throttle and coasting and definitely not when braking. I have an appointment setup with a dealer in a week.

Please update after your appointment. Curious what they say.

My car has done this since I bought it used, I've put 20k on it since then with no change. Hasn't gotten worse or changed with new tires or tires and wheels. Not particularly concerned.

[mindcontrollerone]

Originally Posted by 48Laws

Not really related but i just had my ‘15 F80 W/16k miles rotators and brakes replaced under warranty. Car was vibrating under braking. Car was in the shop just one full day. Love BMW.

I have the same issue but had heard BMW won't cover the replacement of rotors. Is there a specific angle you had to work?

[Humdizzle]

If it's happening every gear you may want to check the parking brake cable. I had this on my 2015 when I bought it. (Park place porsche and the nearby bmw dealer ppi didn't catch it). I had to figure it out myself and bring it to them. $350 and I was good as new.

This is a common issue on the f8x

[Ferg]

Originally Posted by Humdizzle

If it's happening every gear you may want to check the parking brake cable. I had this on my 2015 when I bought it. (Park place porsche and the nearby bmw dealer ppi didn't catch it). I had to figure it out myself and bring it to them. $350 and I was good as new.

This is a common issue on the f8x

What was the parking brake doing and what was the fix?

[Humdizzle]

Originally Posted by Ferg

What was the parking brake doing and what was the fix?

the hand brake cable runs right next to the driveshaft. if it comes loses it will slap the driveshaft under hard acceleration (when the car squats). It will sound like its coming from right under the armrest.

The fix is pretty simple. just need to reposition the cable. I think BMW has the techs bend the cable like 10 degrees so its out of the way. the driveshaft and/or exhaust needs to be dropped to access this area I think.

[Ferg]

Originally Posted by Humdizzle

the hand brake cable runs right next to the driveshaft. if it comes loses it will slap the driveshaft under hard acceleration (when the car squats). It will sound like its coming from right under the armrest.

The fix is pretty simple. just need to reposition the cable. I think BMW has the techs bend the cable like 10 degrees so its out of the way. the driveshaft and/or exhaust needs to be dropped to access this area I think.

Hmmm, so doesn't feel like that type of vibration, but will check it out.