Rear brake noise

Alpine · May 24th, 2018, 23:32

When I brake hard(ish) so that the rear brakes come on I have a faint thud, thud, thud sound and a bit of vibration.

My mechanic says the brakes disks are in ok condition.

Any idea what it could be?

I was thinking a warped disk but if it was something obvious my mechanic would have spotted it.

Thanks.

Cookeh · May 25th, 2018, 09:38

Vibration plates in place and in good condition?

Dippydog · May 26th, 2018, 20:44

A warped disc would[I think] need a dial gauge[ or some kind of home made device to do the same job] to find it,it wouldn't be immediately obvious to the naked eye.

silverback02 · May 29th, 2018, 03:32

Possibly HANDBRAKE SHOES separated.
cannot been seen without stripping down.
good luck.

Alpine · May 31st, 2018, 09:04

Thanks, have just had my handbrake shoes changed as they had delaminated, so I know it's not that. Am thinking it's a warped disk.

malc-c · May 31st, 2018, 12:18

I had a similar regular thud..thud...thud under hard braking and it turned out to be the calipers binding - over a three month period ended up replacing rear NS and front OS calipers and all has been well since

May 24th, 2018, 23:32	#1
Alpine Senior Member Last Online: Apr 13th, 2024 08:14 Join Date: Jan 2012 Location: Leeds	Rear brake noise When I brake hard(ish) so that the rear brakes come on I have a faint thud, thud, thud sound and a bit of vibration. My mechanic says the brakes disks are in ok condition. Any idea what it could be? I was thinking a warped disk but if it was something obvious my mechanic would have spotted it. Thanks. __________________ Phil '98 V70 2.5T (manual '99MY)

May 25th, 2018, 09:38	#2
Cookeh Premier Member Last Online: Sep 14th, 2022 17:04 Join Date: Jan 2018 Location: Derbyshire	Vibration plates in place and in good condition? __________________ 1995 Volvo 850 T5 Estate (Manual)

May 29th, 2018, 03:32	#4
silverback02 Premier Member Last Online: Feb 14th, 2020 20:52 Join Date: Aug 2006 Location: Bangor	Possibly HANDBRAKE SHOES separated. cannot been seen without stripping down. good luck. __________________ 1999 S80 2.4 Auto fully loaded winterpack. 2001 S80 2.9 SE Auto fully loaded winterpack. 2004 C70 2.4 T GT Auto Convertable, fully loaded winterpack Black Metalic (Sapphire). grey Leather, RTI CD. SC901 Prem sound sys. Strut Brace

May 31st, 2018, 09:04	#5
Alpine Senior Member Last Online: Apr 13th, 2024 08:14 Join Date: Jan 2012 Location: Leeds	Thanks, have just had my handbrake shoes changed as they had delaminated, so I know it's not that. Am thinking it's a warped disk. __________________ Phil '98 V70 2.5T (manual '99MY)

May 31st, 2018, 12:18	#6
malc-c Master Member Last Online: Jan 5th, 2024 16:18 Join Date: Jul 2007 Location: Stevenage	I had a similar regular thud..thud...thud under hard braking and it turned out to be the calipers binding - over a three month period ended up replacing rear NS and front OS calipers and all has been well since __________________ Malcolm

May 26th, 2018, 20:44	#3
Dippydog Premier Member Last Online: Apr 25th, 2024 17:55 Join Date: Jun 2016 Location: S****horpe	A warped disc would[I think] need a dial gauge[ or some kind of home made device to do the same job] to find it,it wouldn't be immediately obvious to the naked eye.

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