Front & rear brake discs

Faults and Technical chat for the Discovery Sport
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philkinnaird
Posts: 1
Joined: Tue May 19, 2015 3:34 pm

Front & rear brake discs

Post by philkinnaird » Mon Feb 19, 2018 3:28 pm

Just had car serviced and advised replacing front and rear disc due to wear and corrosion.
Mileage is just over 24k. Rear discs were replaced last year under warranty and advised better quality discs would be fitted. Appears problem still relevant
Any one any info on front disk wear or is this normal at 24k.
Price quoted for front discs and pads £566. Is this normal price for this work
Would appreciate any feedback

Phil


DS SteveB
Posts: 151
Joined: Sat Apr 30, 2016 6:37 am

Re: Front & rear brake discs

Post by DS SteveB » Tue Feb 20, 2018 6:29 am

I would normally expect a set of discs to last more than 24k; discs normally are replaced if they are less than the minimum 'safe' thickness, severely pitted or corroded. I had front discs on a Jeep Cherokee replaced at 30k but they were known for this, I think that cost me about £800 from the dealer. Discs on other cars I have owned have lasted a lot longer & I have always shopped around online for a good make like EBC. It will be interesting to see what other DS owners think. :D
MY16.5 Discovery Sport SE Tech 180, Auto, Fuji White, Black Leather.
Ordered: 7/4/16, Built: 3/5/16
Delivered: 12/5/16
Gone: Holden Clubsport R8, Jeep Cherokee 2.8 CRD, Toyota Supra Twin Turbo, Ford Mustang Cobra.


Andy131
Posts: 8
Joined: Sat Dec 02, 2017 3:33 pm

Re: Front & rear brake discs

Post by Andy131 » Tue Feb 20, 2018 7:45 am

Can't comment on the DS discs as mine has only done 12k - but they do squeal fist thing in the morning.
The FL2 auto that I ran for 185k miles used rear pads every 20K and front pads every 60k. Front discs lasted 120k, and rear discs/drum/shoes lasted 100k miles. It's a similar weight car, from the same manufacturer, driven hard - hard acceleration and late braking rather than speeding.

So I would expect similar performance from the DS


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roadster
Posts: 107
Joined: Fri Sep 01, 2017 3:03 pm
Location: UK South Coast

Re: Front & rear brake discs

Post by roadster » Tue Feb 20, 2018 8:54 am

Brake disks are often changed unnecessarily in my view, its a nice little earner for tyre specialists and MOT test centres. Grooved disks stop just as well, maybe better, than perfect ones so unless they are weakened to below the minimum thickness, which is in itself a conservative estimate, I would resist changing them. Pad life may be slightly reduced but new pads bed into worn disks very quickly and with no loss of efficiency. The exception might be for towing in exceptionally hilly or mountainous areas.
2018 MY Diesel auto 180 SE tech


DS SteveB
Posts: 151
Joined: Sat Apr 30, 2016 6:37 am

Re: Front & rear brake discs

Post by DS SteveB » Tue Feb 20, 2018 9:27 am

Andy, there is a 'fix' for the brake squeal in the form of new type pads, I had mine changed under warranty at the dealers & all fine now. :D
MY16.5 Discovery Sport SE Tech 180, Auto, Fuji White, Black Leather.
Ordered: 7/4/16, Built: 3/5/16
Delivered: 12/5/16
Gone: Holden Clubsport R8, Jeep Cherokee 2.8 CRD, Toyota Supra Twin Turbo, Ford Mustang Cobra.


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Dashnine
Posts: 2036
Joined: Sat Feb 27, 2016 10:18 pm
Location: Warwick, UK

Re: Front & rear brake discs

Post by Dashnine » Tue Feb 20, 2018 12:20 pm

Modern brake pads are more abrasive than the good old (depending on your opinion) asbestos pads. Asbestos was a great material for brake pads, it just wasn't particularly healthy... You never got the squeal / graunching problems you get with modern pads either, so now calipers and pad carriers have odd lumps of metal on them to tune out the squeal.

Modern pads cause thickness variation of the disc (which you feel as judder), it's created when you stop with your foot on the brake after a high energy stop so the disc can warp as the pad heat transfer isn't as good, or from off brake wear on a motorway (pads sometimes not fully retracting and lightly touching the disk).

So the pads are now used to effectively machine the disc smooth again, which wears the disc out way quicker than years ago so they need replacing at what seems stupidly low mileages.
HSE Black MY16 (180 Ingenium), Santorini Black, Ebony Memory Seats, Black Roof Rails, Detachable Towbar, 2 x USB in 2nd row, Delete Badging. Golf GT Convertible and Mini First complete the family.


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