e39 vibration

[whattingh]

Hi there
So there is a bit of a vibration at certain speeds that i have no idea where to look for. The car has 160k kms on got wheel balancing allround last week and 2 new tires. Vibration was there before and now after.

It basically is there at just below 60km/h and then again at around 110km/h. other than that it is not really noticeable. so far I could not figure out from back or front.

How long does the rubber between die gearbox and driveshaft last? could this cause it?

Any other ideas?

 

[P1000]

It could be the guibo (flex disc between driveshaft and GB). It could also be a misalignment of the gearbox and driveshaft. Is it more pronounced when braking? If so, it is control arm bushes and possibly other suspension parts. If not, it can also be a wheel bearing... Which tyres did you replace?

 

[E39 Ian]

When last did you check your tyres? Worn tyres cause all sorts of vibrations.

Balancing can be tricky and the machine could be out, watch out for that, try find a shop with a recently calibrated fully digital one.

 

[SecondSkynz]

more than likely it the front bushes (control arms)

 

[whattingh]

hmmm i did notice something the other day underbraking.....

New tires went on the back Bridgestone turanza er300

---

When last did you check your tyres? Worn tyres cause all sorts of vibrations.

Balancing can be tricky and the machine could be out, watch out for that, try find a shop with a recently calibrated fully digital one.

I have been taking my cars to AutoQuip tygervalley for sometime now that never had a problem. I saw twinz also there the morning i was there.

---

Is there an alternative for bushings other than agents?

 

[rick540]

The E39 is majorly sensitive to tires/rims being out of round, I replaced my control arm bushings for nothing trying to cure a similar vibration.

Turns out the tyre/rims are about 2mm out of round, so now I just live with it, dosent always show up, only occasionaly.

 

[P1000]

You can try imcomex for meyle/HD bushings. make sure they will send you the HD bushings. Their service really sucks, though.

---

Goldwagen also has bushes, but I do not know what quality...

---

+1 for what rick said.

 

[hoosain]

do u have the original rims or aftermarket
if it is aftermarket check if there are spigot rings on

 

[whattingh]

original rims
How can I test the bushings at home?

How can il tell if the guibo is a problem?

 

[P1000]

Get the front-end up on jack stands, then look at the bush while someone moves the wheel so that you can see which parts have play. If they have not been replaced, I can guarantee that they need replacing. It's a good idea to check all the bolts and torque them.

 

[moranor@axis]

if the guibo is gone you will see cracks and string coming out of it...

 

[monag]

Here's a vibration diagnosis flow chart. Very useful info.

 

[Ralf*]

"rick540"
The E39 is majorly sensitive to tires/rims being out of round, I replaced my control arm bushings for nothing trying to cure a similar vibration.

Turns out the tyre/rims are about 2mm out of round, so now I just live with it, dosent always show up, only occasionaly.

my front tyres were "out-of-round", lived with the vibration until a few months ago, replaced both front tyres and vibration was gone

 

[rick540]

"rick540"
The E39 is majorly sensitive to tires/rims being out of round, I replaced my control arm bushings for nothing trying to cure a similar vibration.

Turns out the tyre/rims are about 2mm out of round, so now I just live with it, dosent always show up, only occasionaly.

my front tyres were "out-of-round", lived with the vibration until a few months ago, replaced both front tyres and vibration was gone

Out of round is quite a common problem - lousy QC at the tire factories

 

[whattingh]

ok so last night i crawled under the car.
While my dad pulled on the wheel there was a little bit movement but very very little.
Then I twist on the thrust arm with one hand. This normal or does is mean needs replace?(sorry for not so great vid, hard to hold cam and move thrust arm)
<iframe title="YouTube video player" width="640" height="390" src="

" frameborder="0" allowfullscreen></iframe>

 

[P1000]

I can't move mine...

 

[whattingh]

lovely.

So I guess I'm replacing bushings this weekend.

The balljoints seem good still

 

[whattingh]

oh forgot to ask about this.
it is the lower wishbone link so something. look like small crack but i could not really move it. Is it a problem?

 

[P1000]

I'm not 100% sure I know what you took a picture of. Is that the lower control arm? You will probably be replacing it at some point, but the parts are quite expensive, like >2k5 at agents.

 

[whattingh]

the vid as of arm #4/rubber #5

photo is of #11
got quotes on meyle HD parts
#4 was quote R930 ex vat
#5 was R558 ex vat