02-23-2021, 01:32 AM | #1 |
Mrookie
6
Rep 13
Posts |
Questiong regarding rear diff. whining noise
Hi guys, M power newbie here, just picked up my 2017 M2 DCT with 18000km last month. The car drives great and everything is wonderful. However, I can't help but notice this whining noise coming from the rear of my M2 when the car is either slowly coming to a dead stop or slowly starting to drive. I have also noticed these weird "thumbing" noises from the rear as well. My last car before the M2 was an Audi S3 and never heard anything like this before. A friend with a 2019 M2C told me this is normal, which made me wonder. Because I have driven rear wheel drives before (2003 350Z manual) and never heard similar noises before.
Can anyone here shed some light? Thanks |
02-23-2021, 12:31 PM | #5 |
New Member
6
Rep 14
Posts |
I had many older scoobies with diff whine/clunk - they were considered normal. Never thought our M2s would replicate similar whine!
|
Appreciate
0
|
02-23-2021, 12:32 PM | #6 |
Always +10MPH
1002
Rep 626
Posts |
Yep as others stated. Normal.
And going forward don't be too alarmed by other random clunks or vibrations either. This chassis was not built to reduce NVH at all. Also welcome to the best M car ownership! |
Appreciate
0
|
02-23-2021, 08:43 PM | #7 | |
.
13119
Rep 8,300
Posts |
Quote:
So no limited slip differential only a one leg wonder
__________________
///
|
|
Appreciate
2
CalAcacian537.00 Poochie9099.00 |
02-23-2021, 11:24 PM | #8 |
Mrookie
6
Rep 13
Posts |
Thanks for the tip and the warm welcome! Loving the car more and more everyday!
|
Appreciate
0
|
02-23-2021, 11:27 PM | #9 |
Mrookie
6
Rep 13
Posts |
Also, since the car is used, I'm thinking about changing the differential fluid to Motul Gear 300LS SAE 75W90, which is what I always use for all my other cars. Does anyone here know the specification of the factory gear lubrication?
|
Appreciate
0
|
02-24-2021, 10:52 AM | #10 |
.
13119
Rep 8,300
Posts |
Check your manual for fluid specs
__________________
///
|
Appreciate
0
|
02-24-2021, 02:09 PM | #11 | ||
Luxury at the redline :)
9099
Rep 7,563
Posts |
Quote:
. |
||
02-24-2021, 04:33 PM | #12 | |||
.
13119
Rep 8,300
Posts |
Quote:
That's what accommodated the hooligan inside of you
__________________
///
|
|||
Appreciate
1
Poochie9099.00 |
02-24-2021, 07:51 PM | #14 |
Member
76
Rep 69
Posts |
Some may be normal but I know some early 2016 and 2017 models had a recall on the rear diff that may be worth checking into with your dealer to see if you're car is affected.
|
Appreciate
0
|
02-24-2021, 09:25 PM | #15 | |
Luxury at the redline :)
9099
Rep 7,563
Posts |
Quote:
Nah, that little nugget of a car was really good to me, it's the reason I became an avid fan of BMW. Despite its one-wheel-peel of a differential. That was day before I was taking It back on a lease return, so I let all my friends on the block run a burnout train on that bitch, while I recorded. I can't say it did too well with the second owner; as I ran a vehicle history on it, two years after it was gone and I discovered that it was reported stolen and it was later found but burn to the ground. So, now I don't feel too bad about a few burnouts. . |
|
Appreciate
1
Moflow2484.50 |
02-25-2021, 12:37 AM | #17 | |
Mrookie
6
Rep 13
Posts |
Quote:
|
|
Appreciate
1
Poochie9099.00 |
02-25-2021, 03:58 AM | #18 |
Lieutenant Colonel
332
Rep 1,581
Posts |
The differentials are very sensitive so I'd double check which fluid you change too. Also the correct weight is 75w140. 75w90 was the spec for the prior gen differentials and unfortunately it was a common mistake for dealers to put in early on.
|
Appreciate
0
|
02-27-2021, 10:32 AM | #19 | |
Mrookie
6
Rep 13
Posts |
Quote:
INFORMATION For the M2 (F87), M3 (F80) and M4 (F82, F83) vehicles, ONLY use: Synthetic MPS/A BMW Final Drive Gear Oil (PN 83 22 2 357 992, 1 liter) during a 1,200 ml. Maintenance Service or after a differential replacement. |
|
Appreciate
0
|
03-09-2021, 08:38 AM | #20 | |
Lieutenant Colonel
332
Rep 1,581
Posts |
Quote:
|
|
Appreciate
0
|
03-09-2021, 07:31 PM | #21 |
Private First Class
43
Rep 125
Posts |
I just test drove a car on Sunday, and was very concerned about the whine from the rear. I've driven quite a few vehicles with lsd's and never noticed it.
I'm happy I came across. (in the process of trying to complete the sale now) |
Appreciate
0
|
03-15-2021, 09:31 AM | #22 |
Second Lieutenant
126
Rep 212
Posts |
I am also glad that I came here to sniff around in this M2 forum.
Car has 25500km and I also heard a very slight wining when testing the car but I clearly don't need to worry anymore after reading this thread, great!
__________________
F87 M2 LCI
EX: e92 335d: 350hp@4400rpm and 698NM/521 ft lb@2760 rpm. |
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|