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[MrMoffat]

I had the same problem, but in my case a small stone from my drive got lodged next to the disc and pad & only came in contact when in reverse    luckily I discovered the stone before any real damage occurred 

[omega3000]

It only does it from cold though , once the car has been used and there is heat in the discs it wont squeal  Its all functioning as it should , i can live with it but just weird how its started doing it since the new parts were fitted and went through MOT with no problem . Pads were half worn so ill fit new ones and use grease on re-fitment instead of coppa slip and see what that does 

[Andy B]

..... and use grease on re-fitment instead of coppa slip and see .,...

Not a good idea. Use copperslip or nothing, you dn't want melted grease over your discs & pads. 

[omega3000]

..... and use grease on re-fitment instead of coppa slip and see .,...

Not a good idea. Use copperslip or nothing, you dn't want melted grease over your discs & pads. 

Well thats what i thought but in a post i read it was said that the high temp white grease was used on the back of the pads ...just a slight smear of it , ive always used coppa slip in the past 

[Andy B]

..... ive always used coppa slip in the past 

So have most people, Chris is in the minority 
IMO it's more important though to put a wipe of copperslip at all metal to metal contact/slide points between the caliper & the pad.

[Cliffo B]

I wholeheartedly agree with Chris
No grease of any sort
Friction material and lube are not compatable
Quality pads sat in calipers with minimum corrosion/wear is the route to go
Reverseing squeal I think can be caused by excess pad twist/displacement due to lack of support for the pad from the caliper
Unfortuneately the recent policy of useing sticky additives to winter road de-iceing treatments
Means these sticky corrosive chemicals are forced in and stay around within cast iron calipers a lot longer
I try to minimise this problem by hoseing/flooding the calipers with fresh water when I wash miggy especially when de-icing road treatment prevails
 

[feeutfo]

Is it when driving backwards?

Or when braking backwards?

[Kevin Wood]

Obviously brake friction materials are normally used when the car is in forward motion. This can lead to a feathered edge appearing on the trailing edge of the pad / shoe.

Perhaps this is causing the squeal. If it gets particularly irritating, it might be worth removing the pads and filing a bevel on both edges of the pad to see if that helps.

[feeutfo]

For info, I've been slating trade club pads on here for years. The ones that come in the disc pad set. They squeal and give a very dead feel at the pedal. Or at least the ones from my dealer do.

TB, due to his crippleness, asked me to pick up a trade club disc pad set for him, and I fitted them for him. I refuse to use copper slip on brakes as you all know, no doubt, so TB applied his own copper slip where he wanted it. On the back and edges if the pad backing. All fitted job done.

Next thing, we get a thread on here. TB moaning about brake squeal and a dead pedal feel. Now TB can be a retard in certain areas. The state if his tyres seems beyond his understanding for instance, we all have our weak points. But I'm fairly sure he is capable of applying copper slip where he wants it, however fruitless an exercise that may. But if ever there was proof needed that copper slip is not a cure for brake sqeal, then that is it. Regardless of him admitting it or not.

I do agree with Andy Bedantic that the edges are a key area, and oe pads have shims that cover that area separating the pad metal from the caliper and stopping resonance. How anyone expects copper slip to last, not be forced aside by massive hydraulic pressure, survive all weathers and detergents AND stop brake sqeal and the resonance that causes it is beyond me.

But I guess just because somebody "always uses it" means that must be the cure, right? Maybe TB should rub it his spine, it will fix that as well. although strawberry jam sales dept might come up with a reason why that might work better.

If you want to prove copper slip works, show me pads that squeal. Apply copper slip, and if the squeal us still gone in a fortnights time, then I "might" believe you.

Fact is, it didn't stop TB's from sqealing. Nothing said on here is ever going to change that.

[feeutfo]

Is it when driving backwards?

Or when braking backwards?

And is the squeal affected when reversing and gently applying the hand brake?

[omega3000]

Is it when driving backwards?

Or when braking backwards?

Just squeals when reversing off the drive when the brake is applied going back . I never applied coppa slip to avoid any squealing issues as i had never had any , i just applied it more to stop corrosion of the back of the pads . Interestingly before i could replace the metal shim plate that hooks over the pins it was ok ..its just since i put the new plates in that its been doing it 

Hmm thats just got me thinking now as it never had any coppa slip on them before and it never squealed so since ive put coppa slip on it been squealing 

[Kevin Wood]

Sounds like my last set of TC pads (from a "pad plus disk" set), tbh. They squealed like mad for the first half of their life, then quietened down. TB, being "heavy on brakes", can therefore take comfort in the fact that they'll be fine next week.

When those pads failed unexpectedly, they were replaced by standard Mintex pads from the local motor factor, with no copper grease used. Haven't heard a murmur from them in 10k miles.

Now, if you want to hear pads that squeal you should hear the ones currently on my Westfield. Problem is, they work so well I'm putting up with them.

[omega3000]

It brakes on a knife edge , quite supprised how good the brakes are tbh . I dont do a lot of driving/braking backwards
   so will put up with it for the mo 

[Kevin Wood]

It brakes on a knife edge , quite supprised how good the brakes are tbh . I dont do a lot of driving/braking backwards
   so will put up with it for the mo 

There's yer problem.

I prescribe a couple of hours of J-turn practice.

[Cliffo B]

Back in Feb 2009 I replaced discs & pads on all 4 corners of Miggy
The rear discs are vented and at the time I remember I struggled to get these
A few months later I replaced the rear calipers
That was a long drawn out process
They are no longer made and exchange/ reserviced ones are available only
This means the integrity of the castings is very much in question and a matter of luck
With a great deal of trouble I managed to get a new (old stock) R/H one
The L/H one was an exchange reserviced one from a specialist firm which was as nearly new
This after rejecting at the dealers counter one of their S/order exchange reserviced ones
Since I did this job Miggy has had really effortless smooth positive progressive brakeing
And still is
However I think she may be now ready for some replacement pads as pedal travel has increased slightly
This after about 30,000mls so I'm not complaining