Uneven Brake Pad Contact

jcwacky · Mar 18th, 2015, 11:08

You know that slight grinding noise you get when you brake after not having used the car for a while, due to a build up of dirt or rust on the discs? Well I've started getting it all the time. It's been like this for the past 30 miles. I'm not getting any squealing or squeaking though.

Looking at the discs and the rear right seems to have a different pad contact pattern on it than the others.

Here's a pic:

There are no significant grooves, those two lines are just very shiny!

The pads were new in Dec 2012 and have done about 10,000 miles since.

There's probably a straight forward explanation, just wondering if I need to be concerned? Cheers!

happy diver · Mar 18th, 2015, 11:24

Bit of excessively hard stuff poking it's head out of the pad compound

Dig it out before you get grooves unless you like grooves
or it may be shallow or small and wear away

Austin160 · Mar 18th, 2015, 12:55

You could be excused from thinking it is overdue for a new set of discs and pads.

cheshired5 · Mar 18th, 2015, 13:09

The mark is probably caused by whatever is holding on that last shred of pad lining.
Now the weather's picking up, it's time to spend some quality time with your braking system.

pierremcalpine · Mar 18th, 2015, 13:09

I would put my money on seized slider bolts/torn boots. Take one bolt off at a time, clean and re-lube while carefully inspecting each rubber cover. Replace as necessary.

jcwacky · Mar 18th, 2015, 13:20

Thanks all, seems like it could be a few different things then. Here's a side pic if that helps at all (handbrake is on):

pierremcalpine · Mar 18th, 2015, 14:07

It doesn't really look like you've given the rear brakes enough of a workout. Take it up to 60mph and then apply some moderate force until about 20mph and then let go. Do that about 5 times over your next journey and then take another look afterwards.

cheshired5 · Mar 18th, 2015, 14:09

Quote:

Originally Posted by jcwacky

Thanks all, seems like it could be a few different things then. Here's a side pic if that helps at all (handbrake is on)

Pad thickness actually looks fine from that angle.....

morrismen · Mar 18th, 2015, 20:29

If the pads are old then they will go hard and it will tend to score the disc like this. Otherwise there maybe something got trapped under the pad perhaps.

happy diver · Mar 18th, 2015, 21:59

I use my handbrake all the time
not like in the movies but to keep everything active you know like if you don't use it you will lose it for all the fat couch people

Mar 18th, 2015, 11:08	#1
jcwacky Intermittent Member Last Online: Apr 25th, 2024 12:27 Join Date: Aug 2010 Location: Edinburgh View Photos By: jcwacky	Uneven Brake Pad Contact You know that slight grinding noise you get when you brake after not having used the car for a while, due to a build up of dirt or rust on the discs? Well I've started getting it all the time. It's been like this for the past 30 miles. I'm not getting any squealing or squeaking though. Looking at the discs and the rear right seems to have a different pad contact pattern on it than the others. Here's a pic: There are no significant grooves, those two lines are just very shiny! The pads were new in Dec 2012 and have done about 10,000 miles since. There's probably a straight forward explanation, just wondering if I need to be concerned? Cheers! __________________ My 2001 S40 2.0 Petrol P2 Sport 128,000 miles - Jan 2024

Mar 18th, 2015, 11:24	#2
happy diver Active Member Moment Last Online: Apr 29th, 2023 05:58 Join Date: Jul 2012 Location: Brisbane: perfect for one day, asleep the rest	Bit of excessively hard stuff poking it's head out of the pad compound Dig it out before you get grooves unless you like grooves or it may be shallow or small and wear away __________________ 20,000 leagues under the sea diving to adventure in a silent world with my ceiling the waves...Emile

Mar 18th, 2015, 12:55	#3
Austin160 Master Member Last Online: Oct 29th, 2021 13:42 Join Date: Oct 2013 Location: Cardiff	Uneven Brake pad contact. You could be excused from thinking it is overdue for a new set of discs and pads.

Mar 18th, 2015, 13:09	#4
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	The mark is probably caused by whatever is holding on that last shred of pad lining. Now the weather's picking up, it's time to spend some quality time with your braking system. __________________ 2002 S60 SE D5 Manual 209000 miles

Mar 18th, 2015, 13:09	#5
pierremcalpine Premier Member Last Online: Jan 3rd, 2024 14:43 Join Date: Feb 2012 Location: Toronto Canada	I would put my money on seized slider bolts/torn boots. Take one bolt off at a time, clean and re-lube while carefully inspecting each rubber cover. Replace as necessary. __________________ 2003 V40 1.9T B4204T4, 197,000miles (sold but alive!), 2004 S60 2.5T, 160,000miles, 2010 V70 3.2, 125,000miles, 2002 V70XC 2.4, 175,000miles Click here for my x40 and V70 P3 repair guides

Mar 18th, 2015, 13:20	#6
jcwacky Intermittent Member Last Online: Apr 25th, 2024 12:27 Join Date: Aug 2010 Location: Edinburgh View Photos By: jcwacky	Thanks all, seems like it could be a few different things then. Here's a side pic if that helps at all (handbrake is on): __________________ My 2001 S40 2.0 Petrol P2 Sport 128,000 miles - Jan 2024

Mar 18th, 2015, 14:07	#7
pierremcalpine Premier Member Last Online: Jan 3rd, 2024 14:43 Join Date: Feb 2012 Location: Toronto Canada	It doesn't really look like you've given the rear brakes enough of a workout. Take it up to 60mph and then apply some moderate force until about 20mph and then let go. Do that about 5 times over your next journey and then take another look afterwards. __________________ 2003 V40 1.9T B4204T4, 197,000miles (sold but alive!), 2004 S60 2.5T, 160,000miles, 2010 V70 3.2, 125,000miles, 2002 V70XC 2.4, 175,000miles Click here for my x40 and V70 P3 repair guides

Mar 18th, 2015, 20:29	#9
morrismen Senior Member Last Online: May 3rd, 2023 13:02 Join Date: Dec 2003 Location: London	If the pads are old then they will go hard and it will tend to score the disc like this. Otherwise there maybe something got trapped under the pad perhaps. __________________ Volvo V40 1.8 Petrol SE 2003

Mar 18th, 2015, 21:59	#10
happy diver Active Member Moment Last Online: Apr 29th, 2023 05:58 Join Date: Jul 2012 Location: Brisbane: perfect for one day, asleep the rest	I use my handbrake all the time not like in the movies but to keep everything active you know like if you don't use it you will lose it for all the fat couch people __________________ 20,000 leagues under the sea diving to adventure in a silent world with my ceiling the waves...Emile

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