Vibration through car.

[chunkymonkey]

Im wondering if anybody can shed some light on a vibration that I have with my 325 auto cabby on a K plate. Car drives spot on until about 70 mph then instantly hits a really violent vibration that literally shakes the car to death. Thus far all four wheels have been balanced as has the prop, new UJs on prop. Roll bar bushes and various suspension components have been changed as well. My garage who have looked after the car for years are completley mystified, if anybody has any ideas it would be very much appreciated.

[Curr946]

are all the the engine / gearbox mounts ok? has the rear subframe and trailing arm bushes been checked ?

[magpie]

is the metal weight/vibration damper still in the drivers side boot well ?

[mcbonio]

metal weight/vibration damper still in the drivers side boot well ???! Huh?

[magpie]

metal weight/vibration damper still in the drivers side boot well ???! Huh?

if you have a cab you should have one .

[BenHar]

http://www.realoem.com/bmw/showparts.do ... g=51&fg=80

Ben

[DanThe]

What wheels do you have fitted?

[daimlerman]

metal weight/vibration damper still in the drivers side boot well ???! Huh?

One photo save's a thousand words....

[mcbonio]

Holy crap, my cab never had that in.! No wonder the whole thing throbbed and vibrated.! LOL

[sunnysr]

does it make that much difference to remove it

[macas]

Iv removed mine and its made no difference at all!

[sunnysr]

i weighed mine in during the rebuild havnt used the car yet ,dont plan on it for some time but would be good to know i didnt make too much of a balls up

[Brianmoooore]

BMW didn't put it there for nothing, and I'm fairly certain that their design engineers know a fair bit about chassis design.

[BATTS91]

Have you check your prop donut ? I know when that fooked it vibrates the whole car