m3 Sedan Shudder

[So]

Hi guys

I got a slight shudder/vibration on my m power. Its a 97 sedan SA Spec with 179000kms on the odo. I am lead to believe it could be a coupling on the propshaft. Any other reasons why it would vibrate.

Thanks

So

[fun2drive]

What conditions cause this? Under acceleration, coasting, decellerating? If you can describe the conditions it might help. I think you might be right to check the guibo as it should look like one of these

http://www.pelicanparts.com/bmw/catalog/shopcart/BE36/POR_BE36_TRANSM_pg5.htm#item26

If it looks different then those or has a lot of cracks then you have the solution.

The reason anything vibrates is because it is out of balance and a cracked guibo or fraid guibo would do that.
Hope this helps

[So]

under acceleration the shudder can be experienced. i will get the propshaft checked for any imbalance and also get the coupling replaced.

thanks for your assisstance

[steve757]

check the tires.
could be out of balance.

[MrHeeltoe]

I have this problem too. I am thinking it might be a carrier bearing on the driveline or something.