Car Brakes Squeak - Why

Forums › Transport (cars, bikes and boats) › Car Brakes Squeak - Why - How to Fix?

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Jase2985

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#2629764 3-Jan-2021 17:34

dont do the heavy braking in the wet.

4-5 stops from 80-100kph down to 20-30kph then drive round for about 5 minutes with minimal use of the brakes.

gumboot19

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#2629920 3-Jan-2021 21:43

If the new disc brake pads do not already have a chamfer on the leading and trailing edge, try chamfering the leading edge of the disc brake pads, i.e. a 45deg bevel.

Most reputable disc brake pads have this already.

Batman and Wally are pretty much on the money here.

Geektastic

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#2629925 3-Jan-2021 22:12

Back in the olden days when I maintained my own brakes, the usual solution to this was to remove the pads and coat the REAR surface that does NOT contact the disc (!! Pay attention..!!) with copper grease, as someone has suggested above.

You should be able to see clearly if the wheels are removed whether there is a good smear of copper coloured grease facing you as you look in from outside.

If it isn't that, or a stone, then you're well outside my circle of competence!

Batman

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#2629927 3-Jan-2021 22:15

Shindig:

LOL, I slammed on the breaks a couple of time coming down my wet driveway... heheh ABS kicked in.

It has slightly reduced, but that could be a placebo!

the idea is to build heat on the rotors and pad and then make them get to know each other for a periods of consistency. slamming the brakes and triggering ABS is not going to do that

what you need to do is a long constant brake pressure that is not light

eg downhill on the motorway, heat the brakes up for a reasonable period by applying brake pressure for 400m, let go for 50m, and repeat a few times.

but you don't want to overheat the rotors or they'll warp or the pads could fry and leave deposits

Shindig

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#2629968 4-Jan-2021 07:31

Geektastic:

Back in the olden days when I maintained my own brakes, the usual solution to this was to remove the pads and coat the REAR surface that does NOT contact the disc (!! Pay attention..!!) with copper grease, as someone has suggested above.

You should be able to see clearly if the wheels are removed whether there is a good smear of copper coloured grease facing you as you look in from outside.

If it isn't that, or a stone, then you're well outside my circle of competence!

I too have heard of copper grease, and have seen it being applied to the back of new brakes pad, this was in the UK...

The little things make the biggest difference.

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