[OGM2LCI]

Noticed a strange handling characteristic in the OG LCI M2 recently.
I’m getting strange sensation which feels like the whole car is shimmying and fidgeting when taking my foot off the throttle while mid corner.
As stupid as this sounds (I know about weight transfer when lifting off the throttle mid corner etc) but this is not while pushing the car in the slightest. This is when taking corners at slow speeds (15-25 mph).
My foot is barely on the throttle, but when lifting off the car seems to become extremely unsettled briefly, followed by a strange rubbery whirring sound, which I cannot locate to either front or rear.
I have been struggling with this strange whirring noise and what feels like a rear wheel locking at slow speeds from time to time, often with very little steering lock, meaning I don’t think the diff is doing much work when it happens. It often happens when crawling in traffic and just as I may come to a stop and then touch the accelerator to move forward again.
The car is on a brand new set of SC7’s and I lowered on Eibach springs. The car doesn’t pull when driving in a straight line and otherwise feels fine.
Very difficult noise/sensation/characteristic to put in to words so apologies if it’s a bit of a mess!
Anyone have any thoughts on what could cause this?
The unsettled sensation almost feels like an old E92 I had when it had a failing rear shock absorber, only its missing a lot of other symptoms, plus it doesn’t explain the noise?

[murderspice]

Originally Posted by OGM2LCI

Noticed a strange handling characteristic in the OG LCI M2 recently.
I’m getting strange sensation which feels like the whole car is shimmying and fidgeting when taking my foot off the throttle while mid corner.
As stupid as this sounds (I know about weight transfer when lifting off the throttle mid corner etc) but this is not while pushing the car in the slightest. This is when taking corners at slow speeds (15-25 mph).
My foot is barely on the throttle, but when lifting off the car seems to become extremely unsettled briefly, followed by a strange rubbery whirring sound, which I cannot locate to either front or rear.
I have been struggling with this strange whirring noise and what feels like a rear wheel locking at slow speeds from time to time, often with very little steering lock, meaning I don’t think the diff is doing much work when it happens. It often happens when crawling in traffic and just as I may come to a stop and then touch the accelerator to move forward again.
The car is on a brand new set of SC7’s and I lowered on Eibach springs. The car doesn’t pull when driving in a straight line and otherwise feels fine.
Very difficult noise/sensation/characteristic to put in to words so apologies if it’s a bit of a mess!
Anyone have any thoughts on what could cause this?
The unsettled sensation almost feels like an old E92 I had when it had a failing rear shock absorber, only its missing a lot of other symptoms, plus it doesn’t explain the noise?

Did the trouble start after you put the sc7s on and lowered it?

[OGM2LCI]

Originally Posted by murderspice

Did the trouble start after you put the sc7s on and lowered it?

So the noise has been there for almost as long as I can remember since getting the car (had it for just over one year)
Fitted the springs back in November and the handling sensation probably started a month or so ago
I will be getting an alignment done soon to see if this will help
Should also add that back in February I had the GTS steering, diff and TCS flash done..reckon this is related?

[murderspice]

Originally Posted by OGM2LCI

So the noise has been there for almost as long as I can remember since getting the car (had it for just over one year)
Fitted the springs back in November and the handling sensation probably started a month or so ago
I will be getting an alignment done soon to see if this will help
Should also add that back in February I had the GTS steering, diff and TCS flash done..reckon this is related?

At your mileage, i would expect an aftermarket part to be at fault before an oem one. Generally.

[OGM2LCI]

Originally Posted by murderspice

At your mileage, i would expect an aftermarket part to be at fault before an oem one. Generally.

Car’s on 54k miles. Beginning to think the noise was the initial symptom of something beginning to fail, which is now developed in to this unsettled movement

[murderspice]

Originally Posted by OGM2LCI

Car’s on 54k miles. Beginning to think the noise was the initial symptom of something beginning to fail, which is now developed in to this unsettled movement

Could be a disintegrating diff. Have you checked your fluid lately? Does the same thing happen when the car is back to stock?

[OGM2LCI]

Originally Posted by murderspice

Could be a disintegrating diff. Have you checked your fluid lately? Does the same thing happen when the car is back to stock?

I changed the diff oil not too long ago and couldn’t see any bad signs in the oil I took out. But yeah it happened when the car was stock and didn’t change at all once lowered. I’m really confused as to what it could be.
Do you think wheel bearings could make this noise? Appreciate it’s difficult to say without hearing it

[murderspice]

Originally Posted by OGM2LCI

I changed the diff oil not too long ago and couldn’t see any bad signs in the oil I took out. But yeah it happened when the car was stock and didn’t change at all once lowered. I’m really confused as to what it could be.
Do you think wheel bearings could make this noise? Appreciate it’s difficult to say without hearing it

Your description made it sound like the wheels were not spinning correctly. Might be time to get it on a lift.

[OGM2LCI]

Originally Posted by murderspice

Your description made it sound like the wheels were not spinning correctly. Might be time to get it on a lift.

Sorry to bring up and old post, but I found a clip from an R53 that makes a similar noise to my M2
https://youtube.com/shorts/8Jqdcl030...Qcssm8BVZBhVYK
It’s about half way through the vid, the creaking/groaning noise
I’m familiar with the R53 and that was caused by incorrect gearbox oil which would cause the diff to groan.
As I mentioned though, I’ve recently changed the diff oil to the updated correct oil as stated on realoem
Any ideas? 🤔

[murderspice]

Originally Posted by OGM2LCI

Sorry to bring up and old post, but I found a clip from an R53 that makes a similar noise to my M2
https://youtube.com/shorts/8Jqdcl030...Qcssm8BVZBhVYK
It’s about half way through the vid, the creaking/groaning noise
I’m familiar with the R53 and that was caused by incorrect gearbox oil which would cause the diff to groan.
As I mentioned though, I’ve recently changed the diff oil to the updated correct oil as stated on realoem
Any ideas? 🤔

No idea, sorry man.

[ThreeStripes]

Originally Posted by OGM2LCI

Any ideas? 🤔

Time for a qualified independent mechanic. Recommend keeping one handy.

[OGM2LCI]

Originally Posted by murderspice

No idea, sorry man.

No probs thanks anyway mate, much appreciated

[OGM2LCI]

Originally Posted by ThreeStripes

Time for a qualified independent mechanic. Recommend keeping one handy.

Got a few BMW specialists around, just dreading the large bill that’ll come with investigation for an unknown amount of time. Was really hoping I could figure it out and, depending on the problem, sort it myself, however that’s looking unlikely now!

[OGM2LCI]

Currently questioning:
Wheel bearings
Front subframe stiffening plate
Gearbox
Gearbox mounts
Diff
Diff mounts
Wheel speed sensors
Yaw sensor (if there even is one)

Yet to scan for codes but will do it today on my lunch break

I have noticed traction control interfering under harder, but not flat out, acceleration in perfectly dry conditions where it wouldn’t have done a while ago