[kalee]

Hey guys i drive e90 n54 335xi with 137k miles. The car vibrates when driving but I noticed vibration goes away after driving for 10-15miles. i checked/replaced all the bushing, the axels seems fine, changed tires and balanced it twice already and the tire shop said it was balanced second time i went to the shop but can't figure out what is causing the problem. I need my car to commute to work and I'm scared when driving it to work. Recently changed all the fluids such as transmission fluid (Red line D6 ATF) , front and rear differential (BMW), transfer case(BMW).
When changing the transfer case fluid the bottle said shake well for 30 sec but i didn't shake it and saw the writing after i changed it. could that cause a problem?

[Bimmer_Bro]

Originally Posted by kalee

Hey guys i drive e90 n54 335xi with 137k miles. The car vibrates when driving but I noticed vibration goes away after driving for 10-15miles. i checked/replaced all the bushing, the axels seems fine, changed tires and balanced it twice already and the tire shop said it was balanced second time i went to the shop but can't figure out what is causing the problem. I need my car to commute to work and I'm scared when driving it to work. Recently changed all the fluids such as transmission fluid (Red line D6 ATF) , front and rear differential (BMW), transfer case(BMW).
When changing the transfer case fluid the bottle said shake well for 30 sec but i didn't shake it and saw the writing after i changed it. could that cause a problem?

I doubt that would be causing the issue.
Look into the rubber guibo bushing that is on the drive shaft. There was another thread about this recently. When the guibo bushing becomes worn out, the drive shaft will dance around causing a vibration... but it will eventually calm down.
Does it feel like it's under your butt or is the steering wheel vibrating?
Did you replace the diff bushing ? That was also the cause for some people.

[kalee]

Originally Posted by Bimmer_Bro

I doubt that would be causing the issue.
Look into the rubber guibo bushing that is on the drive shaft. There was another thread about this recently. When the guibo bushing becomes worn out, the drive shaft will dance around causing a vibration... but it will eventually calm down.
Does it feel like it's under your butt or is the steering wheel vibrating?
Did you replace the diff bushing ? That was also the cause for some people.

Oh i forgot to mention it only vibrates going over 60mph and i mostly the feel it under my butt and i can see passenger seat rattling. I will check those bushings asap thank you

[Bimmer_Bro]

Originally Posted by kalee

Oh i forgot to mention it only vibrates going over 60mph and i mostly the feel it under my butt and i can see passenger seat rattling. I will check those bushings asap thank you

Most likely the guibo bushing on the driveshaft then. Good luck.