Warped discs?

cam7777 · 21-02-2008, 08:27

Hi All

I am having problems with my brakes and wonder if anyone has had similar issues.
I have a 2003 1.9TDi hatchback, 77K miles with FSH.
I had some OEM discs fitted but these soon showed the symptoms of being warped (the car feels jerky under light braking and shakes when braking from 70 MPH.
I changed all 4 discs and pads (brembo) and all was fine for about 4K miles then the problem returned so I changed the front discs again, this time I bought unipart items, 4-5K later and problem returns.

I dont drive hard, I am very light on the brakes as most of my driving is motorway. The brakes are not binding in any way so I am now out of ideas so my question is this:
Is there anything else that I have overlooked? I have no knocking from the front end and everything feels tight, I have even tried booking the car in for diagnoses but (as expected) they found nothing wrong....Any ideas?

vindaloo · 21-02-2008, 12:42

After a quiet drive, feel the alloys near the wheel bolts. As a rule. The front ones are warmer than the back ones. They should be around the same temperature as their partner. i.e. Both fronts or both rears. Don't do this is there's glowing hissing or crackling though - LOL. If there's a mismatch, it's likely you've got a caliper sticking.

DO NOT FEEL THE BRAKE DISKS!!! They could be a tad HOT!

It could just be uneven deposits on the brake disks. If so, you can try braking more aggressively to heat the system up more in an attempt to clean the disks. Do it smoothly whilst no-one else is around.

Also, the rear brakes get little use anyway and the handbrake uses the brake pads. It could be deposits on the rear brakes giving the uneveness. Try pulling up the handbrake at speed and see if you can re-produce the problem.

J.

ap0gee · 21-02-2008, 13:12

I'm inclined to believe this article, which states that warping discs through normal road use is impossible. I had some issues with mine rubbing and not feeling 'right', so went out and bedded them in - I loved the results so much, I was sad enough to film it!

In my case, it was nothing to do with deposits on the discs though, and although I never really got to the bottom of it, I mentioned it to the dealer when it was in for service and they carried out the 'mooing rear calipers' warranty mod which fixed it whatever it actually was!

vRS Dovit · 21-02-2008, 13:56

lol top vid! lol lol
My brakes are making an almost grinding nose, very occasionally. All the pads are fine as are the disks. I'm puttin it down to dirt or grit.

Chrispy · 21-02-2008, 14:19

My 320i used to do it...a lot. Went through several sets of discs in a short space of time.

Apparently it was down to 2 things:

1. The hub surface not being perfectly smooth before the new discs were mounted on them, meaning they were ever so slightly wonky.

2. Poor ventilation from my alloys after hard braking.

Not so sure I believed the second point but after then owning a second almost identical car with nice fat 5 spokes i never had the same problem.
Wierd, but hey, I've seen freakier things. Like a man eating his own head....

cam7777 · 21-02-2008, 14:47

Thanks for the replys, I removed the discs and they are squeaky clean, absolutely no sticking whatsoever but still get the problem.
Its ruining a good car so may consider selling on.

thanks guys

Sammycarp · 21-02-2008, 15:54

Quote:

Originally Posted by vindaloo

Also, the rear brakes get little use anyway and the handbrake uses the brake pads. It could be deposits on the rear brakes giving the uneveness. Try pulling up the handbrake at speed and see if you can re-produce the problem.

GENTLY!!!

jasc1988 · 21-02-2008, 16:55

You cant get warped discs, lol

Grant · 21-02-2008, 19:24

Often when people brake, say at the end of a slip road and hold the car on the brakes the heat of the pad hardens the part of the disc that is touching the pad.

This causes the disc to wear unevenly as parts are harder than others.

cam7777 · 21-02-2008, 19:27

Quote:

Originally Posted by Grant

Often when people brake, say at the end of a slip road and hold the car on the brakes the heat of the pad hardens the part of the disc that is touching the pad.

This causes the disc to wear unevenly as parts are harder than others.

Nope, don't do that either im afraid

Timo · 22-05-2008, 11:24

Had this on my car after recent discs etc MOT place said it was steering rack, my trusted garage said they were talking crap, it was bushes on track rods and wishbones that had perished to a point where they were making the steering wobble on braking.

Rustle · 22-05-2008, 12:09

Have you thought about the ABS system? Might be worth getting it checked, but please dont take my word for it as I'm not a trained mechanic, just seems odd that after going through a few sets you still have the same problem.

AwesomeSarah · 22-05-2008, 12:14

To tell you the truth , the first post is the exact same problem I had with mine
Brembo discs and OEM pads , warped within a couple of months
Returned the discs and got another set , same happened again
Same car , more mileage though
So I dont brake alot , I hate people sitting with their foot on the footbrake at traffic lights etc , so I know I dont do that
So was well miffed
I ended up going a megga megga harsh brake as there was an accisent in front of me on the M60 , and hey presto all was good after that
Other than me shaking , there was no more on the brakes
If I am slowly coasting down hill and touch the brakes gently to scrub off a bit of speed , I can feel it a bit , but no more issues
But I will not be having Brembo , or standard discs after this set
Sarah

ap0gee · 22-05-2008, 13:11

Quote:

Originally Posted by AwesomeSarah

Other than me shaking , there was no more on the brakes

Wordsworth, Shakespeare and Larkin couldn't hold a candle to our Sarah's use of the English language!

AwesomeSarah · 22-05-2008, 13:25

You bet

English at school eas not my best subject
Actually it was french and maths

Sarah

ap0gee · 22-05-2008, 13:29

I thought that it was quite good, actually!

AwesomeSarah · 22-05-2008, 13:36

So are you good t french and Maths then

Sarah

ap0gee · 22-05-2008, 13:41

I'm good at most things...

...except dieting!

ap0gee · 22-05-2008, 13:43

Note to self: Stop posting OT

Other note to self: I'm not red today (

) so carry on!

GnatG · 22-05-2008, 16:33

Were the discs fitted for you? I sell brake discs for Mercs, and a common cause of warping according to our supplier is incorrect fitting (not cleaning the hub prior to brake disc placement, over tightening one bolt).

21-02-2008, 08:27	#1
cam7777 Briskodian Join Date: Jul 2007 Posts: 50 Thanks: 2 Thanked 4 Times in 4 Posts	Warped discs? Hi All I am having problems with my brakes and wonder if anyone has had similar issues. I have a 2003 1.9TDi hatchback, 77K miles with FSH. I had some OEM discs fitted but these soon showed the symptoms of being warped (the car feels jerky under light braking and shakes when braking from 70 MPH. I changed all 4 discs and pads (brembo) and all was fine for about 4K miles then the problem returned so I changed the front discs again, this time I bought unipart items, 4-5K later and problem returns. I dont drive hard, I am very light on the brakes as most of my driving is motorway. The brakes are not binding in any way so I am now out of ideas so my question is this: Is there anything else that I have overlooked? I have no knocking from the front end and everything feels tight, I have even tried booking the car in for diagnoses but (as expected) they found nothing wrong....Any ideas? __________________ Skoda Fabia 1.9 TDi - 2003

21-02-2008, 12:42	#2
vindaloo Briskodian Join Date: Sep 2004 Location: South Bucks Posts: 1,144 Thanks: 15 Thanked 16 Times in 16 Posts	Re: Warped discs? After a quiet drive, feel the alloys near the wheel bolts. As a rule. The front ones are warmer than the back ones. They should be around the same temperature as their partner. i.e. Both fronts or both rears. Don't do this is there's glowing hissing or crackling though - LOL. If there's a mismatch, it's likely you've got a caliper sticking. DO NOT FEEL THE BRAKE DISKS!!! They could be a tad HOT! It could just be uneven deposits on the brake disks. If so, you can try braking more aggressively to heat the system up more in an attempt to clean the disks. Do it smoothly whilst no-one else is around. Also, the rear brakes get little use anyway and the handbrake uses the brake pads. It could be deposits on the rear brakes giving the uneveness. Try pulling up the handbrake at speed and see if you can re-produce the problem. J. __________________ Slowly turning the planet sooty.

21-02-2008, 13:12	#3
ap0gee ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire Posts: 6,505 Thanks: 320 Thanked 315 Times in 271 Posts	Re: Warped discs? I'm inclined to believe this article, which states that warping discs through normal road use is impossible. I had some issues with mine rubbing and not feeling 'right', so went out and bedded them in - I loved the results so much, I was sad enough to film it! In my case, it was nothing to do with deposits on the discs though, and although I never really got to the bottom of it, I mentioned it to the dealer when it was in for service and they carried out the 'mooing rear calipers' warranty mod which fixed it whatever it actually was! __________________

21-02-2008, 13:56	#4
vRS Dovit Smoggy Hooligan Join Date: Oct 2007 Location: Kilmarnock Posts: 744 Thanks: 70 Thanked 34 Times in 34 Posts	Re: Warped discs? lol top vid! lol lol My brakes are making an almost grinding nose, very occasionally. All the pads are fine as are the disks. I'm puttin it down to dirt or grit. __________________ Black Magic "55" reg Furby vRS - *ANGEL TUNING CUSTOM REMAP*, Arospeed RS GT 17's, Audi Quatro TT uprated vented drillled and grooved disks, 40mm H&R springs, Cupra R Splitter, De-badged then re-badged with MkII octy vRS badging, vRS Steering Wheel Badge, Colour Coded Grille and Badge, Aero Wipers, "Wolfsburg" Number Plate Surrounds, PD160, PiperX panel filter, Strut brace......."Pikey Stuff" - Inner arch and Elephant Trunk mod! ........And a kick in the to the Enviorment......

21-02-2008, 14:19	#5
Chrispy I said HOT DAMN Join Date: Sep 2006 Location: Normanton, West Yorks Posts: 1,746 Thanks: 38 Thanked 67 Times in 56 Posts	Re: Warped discs? My 320i used to do it...a lot. Went through several sets of discs in a short space of time. Apparently it was down to 2 things: 1. The hub surface not being perfectly smooth before the new discs were mounted on them, meaning they were ever so slightly wonky. 2. Poor ventilation from my alloys after hard braking. Not so sure I believed the second point but after then owning a second almost identical car with nice fat 5 spokes i never had the same problem. Wierd, but hey, I've seen freakier things. Like a man eating his own head.... __________________ Silver '04 Fabia vRS. Jabba Custom Remap, Seat Surgeons Leather interior, Whiteline RARB, Cupra Console Bushes

21-02-2008, 14:47	#6
cam7777 Briskodian Join Date: Jul 2007 Posts: 50 Thanks: 2 Thanked 4 Times in 4 Posts	Re: Warped discs? Thanks for the replys, I removed the discs and they are squeaky clean, absolutely no sticking whatsoever but still get the problem. Its ruining a good car so may consider selling on. thanks guys __________________ Skoda Fabia 1.9 TDi - 2003

21-02-2008, 16:55	#8
jasc1988 Big Jas Join Date: Oct 2007 Posts: 2,651 Thanks: 85 Thanked 102 Times in 99 Posts	Re: Warped discs? You cant get warped discs, lol __________________

21-02-2008, 19:24	#9
Grant Briskodian Join Date: Dec 2004 Location: Huddersfield Posts: 247 Thanks: 0 Thanked 3 Times in 3 Posts	Re: Warped discs? Often when people brake, say at the end of a slip road and hold the car on the brakes the heat of the pad hardens the part of the disc that is touching the pad. This causes the disc to wear unevenly as parts are harder than others. __________________ 51 plate Silver 1.9TDI PD100 Comfort Not that special - but it ain't broken!

22-05-2008, 11:24	#11
Timo Briskodian Join Date: May 2006 Posts: 388 Thanks: 9 Thanked 8 Times in 8 Posts	Re: Warped discs? Had this on my car after recent discs etc MOT place said it was steering rack, my trusted garage said they were talking crap, it was bushes on track rods and wishbones that had perished to a point where they were making the steering wobble on braking.

22-05-2008, 12:09	#12
Rustle Briskodian Join Date: Apr 2007 Posts: 51 Thanks: 0 Thanked 3 Times in 2 Posts	Re: Warped discs? Have you thought about the ABS system? Might be worth getting it checked, but please dont take my word for it as I'm not a trained mechanic, just seems odd that after going through a few sets you still have the same problem.

22-05-2008, 12:14	#13
AwesomeSarah Site Sponsor Join Date: Mar 2006 Posts: 3,698 Thanks: 34 Thanked 166 Times in 147 Posts	Re: Warped discs? To tell you the truth , the first post is the exact same problem I had with mine Brembo discs and OEM pads , warped within a couple of months Returned the discs and got another set , same happened again Same car , more mileage though So I dont brake alot , I hate people sitting with their foot on the footbrake at traffic lights etc , so I know I dont do that So was well miffed I ended up going a megga megga harsh brake as there was an accisent in front of me on the M60 , and hey presto all was good after that Other than me shaking , there was no more on the brakes If I am slowly coasting down hill and touch the brakes gently to scrub off a bit of speed , I can feel it a bit , but no more issues But I will not be having Brembo , or standard discs after this set Sarah

22-05-2008, 13:25	#15
AwesomeSarah Site Sponsor Join Date: Mar 2006 Posts: 3,698 Thanks: 34 Thanked 166 Times in 147 Posts	Re: Warped discs? You bet English at school eas not my best subject Actually it was french and maths Sarah

22-05-2008, 13:29	#16
ap0gee ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire Posts: 6,505 Thanks: 320 Thanked 315 Times in 271 Posts	Re: Warped discs? I thought that it was quite good, actually! __________________

22-05-2008, 13:36	#17
AwesomeSarah Site Sponsor Join Date: Mar 2006 Posts: 3,698 Thanks: 34 Thanked 166 Times in 147 Posts	Re: Warped discs? So are you good t french and Maths then Sarah

22-05-2008, 13:41	#18
ap0gee ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire Posts: 6,505 Thanks: 320 Thanked 315 Times in 271 Posts	Re: Warped discs? I'm good at most things... ...except dieting! __________________

22-05-2008, 13:43	#19
ap0gee ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire Posts: 6,505 Thanks: 320 Thanked 315 Times in 271 Posts	Re: Warped discs? Note to self: Stop posting OT Other note to self: I'm not red today ( ) so carry on! __________________

22-05-2008, 16:33	#20
GnatG Briskodian Join Date: Oct 2007 Posts: 243 Thanks: 81 Thanked 8 Times in 8 Posts	Re: Warped discs? Were the discs fitted for you? I sell brake discs for Mercs, and a common cause of warping according to our supplier is incorrect fitting (not cleaning the hub prior to brake disc placement, over tightening one bolt).

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