Copper paste on the back of brake pads? Or not

[golfdsg]

Brakes had started squealing after a track day last month. The overheated brakes had a lot of pad deposit stuck to the discs. After a few days of driving with vibrating brakes, the discs are clear of pad deposit and the braking is very smooth but the squeal is unbearable.

So I'll be using Mintex ceratec anti-squeal instead of copper grease to get rid of the sound.

[bearman68]

S8QUATTRO said:

Also learnt that the new non conductive grease is better for cars with abs, ESP, dsc etc as it doesn't interfere with cars electronic systems. Product such as MIntex ceratec as we used today.

And interesting info about discs warping today, it's really rare and not (usually) warped discs but uneven wear when there is excessive run out when originally fitting discs. Many garages won't check for run out when fitting discs but it can solve lots of judder and squeal issues if fitted correctly in the first place.

Gosh, what a load of rubbish spouted here. ABS works on a magnetic pick up on the wheel, so why the conductivity of grease on the back of the pads makes any difference is completely beyond me.
'Warped' discs are usually badly cast discs from the manufacturer. Differences in the friction coefficient mean that an individual brake grabs / slips / grabs / slips. While I agree few garages measure run out,this is not normally the factor IME. (Run out will be felt as excessive brake pedal movement anyway)

[E-bmw]

bearman68 said:

S8QUATTRO said:

Also learnt that the new non conductive grease is better for cars with abs, ESP, dsc etc as it doesn't interfere with cars electronic systems. Product such as MIntex ceratec as we used today.

Gosh, what a load of rubbish spouted here. ABS works on a magnetic pick up on the wheel, so why the conductivity of grease on the back of the pads makes any difference is completely beyond me.

I suspect the reference is referring to if you use too much & end up with a blob of grease on the reluctor ring it wouldn't cause an issue with the abs sensor.

[colin_p]

As good as it is, copper grease is sticky and attracts dirt, dust and grit.

The new fangled ceramic grease is a 'dry' grease which doesn't. It is also better in extreme heat situations.