Help brake judder

[adem.csl]

This is one of my customers cars from a couple weeks back
He took it to a tyre and brake shop on the high street.they fitted him cheap pads and discs
He wanted to save a bit of dough
They didn't clean the hubs of rust and debris.it warped in 8 weeks.i had to clean this all down properly and remove all the high points.fitted new pads and discs problem solved

[adem.csl]

This is a rusty high spot where water has gone through a hole and settled behind the disc.not cleaning this off PROPERLY will cause intolerance in the disc.not long after you get vibration cos it won't run true

Hope that helps in some form
I know a Mercedes hub is not the same as a Bmw hub but you get the idea

[select]

Adem, no problem im not a car mechanic and i certainly dont have 25 years of experience. Im just another csl drug addict.

But.. considering he has changed pads and had his rotors skimmed that certainly leaves me to think the problem is probably elsewhere. And when i read that he has spacers installed it is a good idea to remove them just to see if they were the issue. If they are cheap versions or not of hub-centric type they certainly can cause steering wheel wobbling. I dont know if wheel bearings can cause it too but i think if they are shot enough they can?

[adem.csl]

Adem, no problem im not a car mechanic and i certainly dont have 25 years of experience. Im just another csl drug addict.

But.. considering he has changed pads and had his rotors skimmed that certainly leaves me to think the problem is probably elsewhere. And when i read that he has spacers installed it is a good idea to remove them just to see if they were the issue. If they are cheap versions or not of hub-centric type they certainly can cause steering wheel wobbling. I dont know if wheel bearings can cause it too but i think if they are shot enough they can?

You are right about the spacers cos as not my early post I said of the problems I had with cheap cold pressed spacers.now although they were temporary to get me home for weekend they caused a lot of damage to my new brakes.
Stoptech only do bbk 380mm kit for e46 m3 and not Csl so my problem was the et setting of the rims as Csl is 3mm shy of the m3 et setting ,my wheels touched the calipers and caused damage to my rims and brand new calipers.so I had to go halfords to get cheap 5mm spacers to make up clearance so I could get the car home.
I'm not saying anyone's opinion is wrong I'm only saying my advice is an aid to diagnosis and in a sense is not fact based because I'm a practical mechanic not a technical mechanic.in the sense I know what's wrong and what I'm doing but I'm not technical all numbers n figures about it.

I don't seek to argue with anyone so I just choose to add my opinion and hope it helps guys out.

[select]

That sucks to hear about your wheels and brakes.. what a pain in the :moan:

I don't seek to argue with anyone so I just choose to add my opinion and hope it helps guys out.

Its all in good spirit, i didnt mean to start bickering with you. You certainly know your stuff, so i am glad you are sharing your knowledge. :beer:

[adem.csl]

That sucks to hear about your wheels and brakes.. what a pain in the :moan:



Its all in good spirit, i didnt mean to start bickering with you. You certainly know your stuff, so i am glad you are sharing your knowledge. :beer:

All good mate.
Yeah with the brakes the vendor didn't say or didn't know that this kit was m3 only. and in honesty why would stoptech make a kit for a Csl when they don't have Csl in America.but they should have added n their info that this kit won't fit Csl due to rim et offset differences or indeed added a set of spacers to take up the tolerance differences.so not only did I damage the spokes on my rims I damaged the brand new calipers is waited and special ordered in grey. I also had to buy 2 sets of spacers and pay a man to skim brand new discs so a hard lesson for me.

[knoxville]

Bearings must be good. Hubs must be super clean. Fit discs, check runout in all positions and install at best position. Bed in DECENT pads correctly and you'll get no issues.

If you still get steering wheel wobble, it'll be from elsewhere.

[adem.csl]

Any luck sorting your brake judder mate?