some vibration issues

[chudson91]

Ok well i have one more problem(for now).

When i hit 40 mph there is a vibration(bass) noise and then will stop when i am around 45mph.

I have done all motor mounts and just done tranny mounts. I also changed my diff fluid a few months back.

I cannot tell if its coming from the tranny or diff but maybe some one on here has had a similar problem and found the fix.

Thanks,

[mcaden]

I had this problem in my 2002... had the wheels balanced = gone. Balancing is sometimes the cause for a periodic vibration at speed.

Good luck.

-Marc

[chudson91]

Would say yes, but tires and wheels are pretty new. But i will have them check this friday.

[jlevie]

Would say yes, but tires and wheels are pretty new. But i will have them check this friday.

Are the wheels a proper hubcentric fit (I.E., made specifically for an E30)? If they aren't it may impossible to balance the wheels off the car.