Driveshaft Woes and Wonders???????????

[bmw320e21]

I had a e90 come in for harsh vibration under wot and it turned out to be heat spots on the flywheel. You might wanna check that out too.

[jahnaboi]

Its all figured out. Thanks.

[Jason89i]

sssooooo. what was it?

[D-rock]

My car did the same thing...

[jahnaboi]

Was the flex disk. Had hairline cracks on it that were not visible at a resting position. Only noticeable if you put two bolts in two holes and pulled them apart acting as if there was load put upon it (like how it is on the car).

[MIKe30]

Was the flex disk. Had hairline cracks on it that were not visible at a resting position. Only noticeable if you put two bolts in two holes and pulled them apart acting as if there was load put upon it (like how it is on the car).

sheesh, thats frustrating. glad you found it though.

[jahnaboi]

sheesh, thats frustrating. glad you found it though.

Seriously... very frustrating. I only figured it out because I saw that my painted selector rod had the paint stripped at a certain point from where the flex disk under load was expanding and rubbing against it.