Daven54

Lurker
May 20, 2019
11
1
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Bmw 335i
Hey guys i was just wondering if anyone has notice if they have gotten a clunk when putting the car in gear and when changing gears, i also have a bms diff brace
 

Jeffman

Major
Jan 7, 2017
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I noticed a clunk when going from P to D or R and starting to roll. I suspected (correctly) that the origin of the clunk was in my brakes and it disappeared after I tightened up and lubricated my calipers when I installed new rotors and pads.
 
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Panzerfaust

Lieutenant
Jul 3, 2018
637
436
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Chicago
Ride
E92 335i
I believe certain kinds of clunks can also be caused by very worn bushings as well, especially if going from driving one direction to another (D>R, N>D, R>D etc) due to the diff shifting slightly when the load changes.
 

ShocknAwe

Captain
Jan 24, 2018
1,256
596
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Charleston, SC
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N54/3 1er ///Mutt
Normal in a manual car for a LSD to clunk when going from neutral to first or from R to first or vice versa.

Dunno about auto.
 

doublespaces

Administrator
Oct 18, 2016
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AZ
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2009 E93 335i
I get a clunk, but it sounds like my brakes and I'm pretty sure it is. I have AKG black diff mounts and an MFactory lsd. I have F30 brembo kit in back and its not 100% so I can't imagine it is anything else.
 

scrllock

Sergeant
Dec 17, 2018
267
152
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Ride
2011 335xi
Did you get a full pumpkin or install a new diff into your carrier? If the latter, did you have your shim/bearing done properly?
 

Jeffman

Major
Jan 7, 2017
1,568
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593
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I get a clunk, but it sounds like my brakes and I'm pretty sure it is. I have AKG black diff mounts and an MFactory lsd. I have F30 brembo kit in back and its not 100% so I can't imagine it is anything else.
When was the last time you worked on your brakes? I had a loose caliper which caused my clunk.
 

Jeffman

Major
Jan 7, 2017
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My brakes had been untouched for about four years when my clunk developed. You’re probably still good in this regard.
 

Daven54

Lurker
May 20, 2019
11
1
0
Ride
Bmw 335i
Did you get a full pumpkin or install a new diff into your carrier? If the latter, did you have your shim/bearing done properly?
i got a performance shop to install the lid into the carrier and i installed the pumpkin into my car but i replaced all the bearings and provided all new shims, i was wondering if its the differential brace that is causing me to notice the clunk. Im going to remove it and see if i can still hear or feel the clunk. Also i don't hear or feel any whine or gear noise when accelerating or decelerating