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dirtydirtydiesel wrote: ↑Thu Apr 29, 2021 6:51 pm

NinoB wrote: ↑Wed Mar 31, 2021 12:44 am

dirtydirtydiesel wrote: ↑Thu Mar 11, 2021 9:29 pm Yes your bottom ball joint can cause vibrations through breaking
So can the lower arm bushings, the rear ones ware quite quickly.
How old is the car / millage & have the above components ever been changed ?

Some brake disc's & pads combos require very specific bedding in procedure
Failing to do this can cause the surface of the disc / pad to become less than perfect
which can cause the vibration a certain speeds.

What brand of disc & pad did you buy?

New original oem ball joint, disc, tie rods, lower arm, pad, even caliper and the rubber that supplied brake fluid to the caliper (in fact i change disc 3 times which initially it will start without vibrations on breaking bit after a week it will start vibrating on breaking) .. All these i changed on both side, change the back dics and drum on both side.. Still the vibration continues on breaking around 70kmph, and it vibrates on the steering only and on front left side.. But any speed above 90kmph the breaking does not vibrates bit as it reaches 70km it will starts vibrating.. Am tired after all spending.. In fact i got a complete left hand side suspension which includes shocks, ball joint, dics, caliper, rotor, hub from someone then i tried still no changes.. Omg..
What do you mean by bedding procedure and how?

You didn't say if you replaced the rear lower arm bushing when you did the lower arm?
These wear out quite quickly, the strut top mounting rubber ages & wears over time,
this two would allow movement under breaking.

Also did you check / replace the inner tie rod joints (that go into the steering rack)
these were shot on my wifes 206 a few years back allowing movement through the steering.

On the BMW e60/61's a common problem is the slider pins & the bores for them in the calipers wearing,
You hone them out with a special tool & fit oversize slider pins.
Have you checked the runout on the hub mating surface & the runout on the disc face with a D.T.I ?

Your overlooking something somewhere that's worn allowing slight movement under breaking.

Does it get worse the faster you go ?

steve_earwig wrote: ↑Fri Mar 05, 2021 9:53 am

NinoB wrote: ↑Thu Mar 04, 2021 11:00 pm I changed disc, pads bearing hub, braking caliper all original

I'm not entirely sure which parts you have changed there and which you're saying are original. The usual suspects are brake disk, hub, tyre, wheel, suspension components. Ooh, brake pads too apparently. Although of these I don't think wheel/tyre will go away and come back. Perhaps you could get each corner in the air and check then for any binding etc. and check the suspension components. Left side, front or rear? I'm not sure it's safe to say it's coming from one side or the other either, things have a way of transferring across the car, especially vibration. Don't assume the new brake disk is perfect either.

steve_earwig wrote: ↑Fri Mar 05, 2021 9:53 am

NinoB wrote: ↑Thu Mar 04, 2021 11:00 pm I changed disc, pads bearing hub, braking caliper all original

I'm not entirely sure which parts you have changed there and which you're saying are original. The usual suspects are brake disk, hub, tyre, wheel, suspension components. Ooh, brake pads too apparently. Although of these I don't think wheel/tyre will go away and come back. Perhaps you could get each corner in the air and check then for any binding etc. and check the suspension components. Left side, front or rear? I'm not sure it's safe to say it's coming from one side or the other either, things have a way of transferring across the car, especially vibration. Don't assume the new brake disk is perfect either.

NinoB wrote: ↑Wed May 12, 2021 4:50 pm Success.. All these while i was treating left side suspension.. I remembered someone here said vibration is transitional.. So i removed and replaced the right brake hub.. Boom problem solved.. Thanks guys.. After wasting money and time.. 5 months suffering

dirtydirtydiesel wrote: ↑Wed May 12, 2021 5:36 pm

NinoB wrote: ↑Wed May 12, 2021 4:50 pm Success.. All these while i was treating left side suspension.. I remembered someone here said vibration is transitional.. So i removed and replaced the right brake hub.. Boom problem solved.. Thanks guys.. After wasting money and time.. 5 months suffering

Congratulations , glad you got to the bottom of it.
I might go & look at my airbag issue & see if I can't get to the bottom of that