Technical Question

[GandTM3]

I have a 2003 M3 convertible with 35K miles. Occasionally when making a hard left turn under acceleration, there is a slight rubbing sound coming from the right rear. I am at factory ride hight and don't think it is tire rub. Does anyone have any thoughts??
Greg

 

[Big Daddy]

I would remove the right rear tire and inspect it for wear and at the same time you can look around in that fender well.

 

[gpoints]

it sounds like the rear diff fluid. There's a service bulletin that calls for a special diff fluid to be used.

I had the same issue with my car and the diff fluid resolved the issue.

check out this thread:
http://www.m3forum.net/m3forum/showthread.php?t=165164&highlight=rear+diff

 

[GandTM3]

I thought it might be from the diff but since I am new to the BMW world, I thought I'd ask. Is it difficult to change the fluid myself or should I have it done?? Thanks

 

[gpoints]

I haven't done it on an M yet, but I have on other cars. It's pretty simple, just drain and replace with the new fluid.

 

[GandTM3]

I've changed the diff fluid and it makes a world of difference. Thanks for the help. GandTM3

 

[gpoints]

One las thing I just thought of is that you should periodically do figure-eight's in parking lots. This is supposed to be a good practice to keep the rear diff in good shape.

 

[Big Daddy]

One las thing I just thought of is that you should periodically do figure-eight's in parking lots. This is supposed to be a good practice to keep the rear diff in good shape.

Oh sure, your a tire salesman and trying to keep business moving...

 

[gpoints]

Oh sure, your a tire salesman and trying to keep business moving...

You got me!