It it ok to fit thick new brake pads onto old/brittle discs ?

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Cleverboy1991
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#1
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I am going on holiday to the Isle Of Wight on Monday which is about a 6 hour drive there, 6 hour driver back and driving around during the holiday we will drive about 1,200 miles
the front brake pads were very thin and the discs have a lip on them, I really wanted to change the idscs and pads before the holiday but the caliper bolts are so tight and also rounded, I need a rounded off bolt tool but that won't come on time fro mwhere I'd purchase it from.

I ended up changing the brake pads and I will do the discs after I return from holiday as I will have mroe time then.

I have driven almost 60k miles and the front pads/discs had never been changed so have covered at least 60,000 miles, but the pads were changed today not the discs though.

is it ok to fit the new thick pads onto the old scored brake discs or will it weaken damamge the disc ? I will be changing the discs when I get home form holiday it is just emporarily as I don't have time to wait ordering the parts to remove the bolts e.t.c.


thank you
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alex282
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Well I would have advised to do both at the same time but you have already done the pads so... I don't think its very common for the disc to break just because it is scored so if it passed the last MOT then another 1200 miles should be ok

I do most small-medium jobs on my car myself but personally brakes are something that I leave to the professionals
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Apachecow
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Ideally measure the disc - they need to be a certain thickness. Fitting new pads to an old disc is fine, but you should always fit new pads to a new disc, so not sure where that leaves you after your holiday.
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IWMTom
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You're going to have to replace the pads again when you replace the discs.
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Cleverboy1991
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(Original post by IWMTom)
You're going to have to replace the pads again when you replace the discs.
shouldn 't need to if I only drive aorund 1200 miles until i change the discs
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Apachecow
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You should. New pads always on new discs.
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IWMTom
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(Original post by Cleverboy1991)
shouldn 't need to if I only drive aorund 1200 miles until i change the discs
On your own head be it.
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Admit-One
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(Original post by IWMTom)
On your own head be it.
Tom, must I remind you that "it has been well looked after". It's 100% fine despite what dangerous faults and poor maintenance he applies!

Updated, but still very much abbreviated!

How much does a small windshield chip usually cost to repair ?
Can a windshield chip be repaired twice ?
Was my windshield chip repaired wrong ?
Windscreen resin not curing properly in repaired pit. it's able to be scraped out
How difficult /easy is to fit an exhaust clamp ?
Is it okay to secure exhaust with a Jubilee clip ?
The front windscreen wipers suddenly stopped working, why ?
Is it okay to swap 16 inch wheels for 17 inch wheels ?
cambelt and water pump replaced, drove car home now not starting ?
took door panel off, now the car won't open from inside?
Why does my car not start and make a clicking noise ?
Why do the front fog lamps on my car not work ?
How would I know if the engine mount had gone on my car ?
Did my friend rip me off when fitting a alternator ?
New backbox hitting inside of bumper, what to do ?
Is it normal for the temp gauge to go past half way slightly ?
Can I drive without rear brake pads to drive the car shop to buy new ones ?
Pressing brake pedal with no pads in caliper/connected ? ( brake and disc job )
Car not starting after timing belt change, did drive home but not starting now
Did I cross thread sump bolt when doing oil changer ? plug was tight to put back in.
Is it difficult to replace a windshield yourself ?
Would a 2007 car pass mot without front fog lamps working ?
why has Rear brake pads on one side worn right down, only replaced 6 months ago.
Is it difficult to bleed brakes ? just replaced caliper
Would a gasoline car battery jump starter work on a diesel car ?
Driving with car handbrake on then burning smell?
Thumping (drum being hit sound ) noise when pressing car brakes then scraping
It it ok to fit thick new brake pads onto old/brittle discs ?
Last edited by Admit-One; 2 weeks ago
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IWMTom
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(Original post by Admit-One)
Tom, must I remind you that "it has been well looked after". It's 100% fine despite what dangerous faults and poor maintenance he applies!

Updated, but still very much abbreviated!

How much does a small windshield chip usually cost to repair ?
Can a windshield chip be repaired twice ?
Was my windshield chip repaired wrong ?
Windscreen resin not curing properly in repaired pit. it's able to be scraped out
How difficult /easy is to fit an exhaust clamp ?
Is it okay to secure exhaust with a Jubilee clip ?
The front windscreen wipers suddenly stopped working, why ?
Is it okay to swap 16 inch wheels for 17 inch wheels ?
cambelt and water pump replaced, drove car home now not starting ?
took door panel off, now the car won't open from inside?
Why does my car not start and make a clicking noise ?
Why do the front fog lamps on my car not work ?
How would I know if the engine mount had gone on my car ?
Did my friend rip me off when fitting a alternator ?
New backbox hitting inside of bumper, what to do ?
Is it normal for the temp gauge to go past half way slightly ?
Can I drive without rear brake pads to drive the car shop to buy new ones ?
Pressing brake pedal with no pads in caliper/connected ? ( brake and disc job )
Car not starting after timing belt change, did drive home but not starting now
Did I cross thread sump bolt when doing oil changer ? plug was tight to put back in.
Is it difficult to replace a windshield yourself ?
Would a 2007 car pass mot without front fog lamps working ?
why has Rear brake pads on one side worn right down, only replaced 6 months ago.
Is it difficult to bleed brakes ? just replaced caliper
Would a gasoline car battery jump starter work on a diesel car ?
Driving with car handbrake on then burning smell?
Thumping (drum being hit sound ) noise when pressing car brakes then scraping
It it ok to fit thick new brake pads onto old/brittle discs ?
you're definitely my favourite user
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nevershear
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#10
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#10
(Original post by Admit-One)
Tom, must I remind you that "it has been well looked after". It's 100% fine despite what dangerous faults and poor maintenance he applies!

Updated, but still very much abbreviated!

How much does a small windshield chip usually cost to repair ?
Can a windshield chip be repaired twice ?
Was my windshield chip repaired wrong ?
Windscreen resin not curing properly in repaired pit. it's able to be scraped out
How difficult /easy is to fit an exhaust clamp ?
Is it okay to secure exhaust with a Jubilee clip ?
The front windscreen wipers suddenly stopped working, why ?
Is it okay to swap 16 inch wheels for 17 inch wheels ?
cambelt and water pump replaced, drove car home now not starting ?
took door panel off, now the car won't open from inside?
Why does my car not start and make a clicking noise ?
Why do the front fog lamps on my car not work ?
How would I know if the engine mount had gone on my car ?
Did my friend rip me off when fitting a alternator ?
New backbox hitting inside of bumper, what to do ?
Is it normal for the temp gauge to go past half way slightly ?
Can I drive without rear brake pads to drive the car shop to buy new ones ?
Pressing brake pedal with no pads in caliper/connected ? ( brake and disc job )
Car not starting after timing belt change, did drive home but not starting now
Did I cross thread sump bolt when doing oil changer ? plug was tight to put back in.
Is it difficult to replace a windshield yourself ?
Would a 2007 car pass mot without front fog lamps working ?
why has Rear brake pads on one side worn right down, only replaced 6 months ago.
Is it difficult to bleed brakes ? just replaced caliper
Would a gasoline car battery jump starter work on a diesel car ?
Driving with car handbrake on then burning smell?
Thumping (drum being hit sound ) noise when pressing car brakes then scraping
It it ok to fit thick new brake pads onto old/brittle discs ?
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Admit-One
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#11
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(Original post by nevershear)
Flabbergasted at all the money he’s been saving, eh?
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Admit-One
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Actually I’ve just realised that this means he didn’t manage to flog it 3 weeks ago on Shpock for £900. Colour me surprised.
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Dunnig Kruger
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#13
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Do you have a flank drive socket set and a breaker bar?

When you're ready to replace the disks, inspect the pads. If the surface of them is not flat and parallel, bin them and get new pads to go with the disks.

Depending on the car, you may be better off getting authentic disks and pads from the manufacturer of your car.
For example, in January I replaced the front disks and pads on my 2006 Volvo XC90 with parts from a South Wales Volvo dealer. Because there have been reports of some disks warping if not genuine Volvo ones and not used with genuine pads.
The old disks were certainly warped, making the car vibrate alarmingly under braking. But that may have been from driving it through lots of deep puddles during all the autumn rain that we had.
Last edited by Dunnig Kruger; 2 weeks ago
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Talon
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(Original post by Admit-One)
Actually I’ve just realised that this means he didn’t manage to flog it 3 weeks ago on Shpock for £900. Colour me surprised.
Understandable, given that he services his own brakes yet had to ask about fitting an exhaust clamp.
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Cleverboy1991
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#15
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(Original post by Talon)
Understandable, given that he services his own brakes yet had to ask about fitting an exhaust clamp.
Why don't yopu just stfu and quit the sarcasm ?
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Talon
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(Original post by Cleverboy1991)
Why don't yopu just stfu and quit the sarcasm ?
If I was being sarcastic, I would have indicated it with some kind of emoji.
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Cleverboy1991
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#17
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(Original post by Talon)
If I was being sarcastic, I would have indicated it with some kind of emoji.
No. Your mom would have indicated it with some kind of emoji
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IWMTom
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(Original post by Cleverboy1991)
No. Your mom would have indicated it with some kind of emoji
Your mum would take you to the church, Mark.
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Talon
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(Original post by Cleverboy1991)
No. Your mom would have indicated it with some kind of emoji
Thank you for indicating that I have won the thread.
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