Car Brake Disc Wear

TankEngine

Honda CR-V in for a service today and garage just phone to say both the discs and pads on the front are approx 75 % worn. I can accept that the pads are nearly 75 % worn and I visually checked then this morning before dropping the car off.
Do you think it's possible for a car to have done 25K miles to require new discs as well?

Any help info/advice appreciated.

Cheers
Tank

steveo3002

its proabaly fine for a good few more miles

its very common that dealers try to push new brakes on everyone , because its a saftey issue most people accept the extra work

TankEngine

Cheers. I usually have the discs changed around 48K miles.

Road_Hog

TankEngine wrote: »

Honda CR-V in for a service today and garage just phone to say both the discs and pads on the front are approx 75 % worn. I can accept that the pads are nearly 75 % worn and I visually checked then this morning before dropping the car off.
Do you think it's possible for a car to have done 25K miles to require new discs as well?

Any help info/advice appreciated.

Cheers
Tank

First question, if there is 25% left on them, why change them now? Ask the dealer how many miles are left on them and them arrange to have it done then.

Secondly I believe that changes in manufacture of pads in recent times (to improve braking and also lose items like asbestos) to harder materials to improve braking has led to shorter lifespans for discs.

Also are you a town driver? It is mainly what the HRV was marketing at, picking the kids up and going to Sainsburys. If you do mainly town driving you will wear the brakes out much nore quickly. Are you a low mileage driver, as discs start to rot if the car is left standing or doesn't get enough use?

hewhoisnotintheknow

depends how you drive

i did nearly 70k of motorway driving on a second hand car before i need to replace the pads, however, my mother needs them replaced every bloody service.

I wouldnt let the dealer change them anyway, leave them on there and get them done when you need to

Wig

It does depend how you drive, if you do loads of city driving you can change discs twice a year.

We can deduce if the information is accurate 25K/.75 = 33,333 so you have 8000 miles remaining. What's the point of changing them early when it will not save you any money doing them now? Waiting to do them later, however, will make a small saving. I wouldn't change only the pads now, either because they would throw them away when you do change your discs later.


Plus if you say "no" you can verify what they say is true, by maybe taking the car to a quick fit centre and asking for a free brake check and ask them to measure the thickness of the discs, i.e. not to give you an estimate but an actual thickness figure. You could ask the people servicing the car for this information too, but look up the minimum before you ask. The new and min difference could be a difference of only 2mm, so don't panic when you hear them say it is 22.5mm thus you have 0.5mm left , it may not sound much , but it is not dangerous and could last a lot longer.

Then compare that figure with the 'new' & 'min' thickness of the discs....

I use a site like this one to look up my cars disc specifications
http://www.apec-braking.co.uk

exup

even with modern cars and modern brakes its unusual to wear pads out at the same rate as the disks. have the pads been changed already?

as to needing two sets of disks a year . I'm just wondering what sort of urban driving this involves - what sort of mileage and vehicle and type of use are we talking about? Just curious (perhaps a heavy London taxi?).. but even intructing on motorcycles around Bradford which is hard on brakes - and motorcycles discs and pads are thinner to start with anyway. the only time we had to change discs in the life of a machine was when they began to get grooved - or if they warped.

Conor_3

It depends on how you drive. The only problem nowadays is thanks to the fact asbestos was made illegal as a brake pad material, modern brake pads contain more metal and are more abrasive thus wear out discs faster than the asbestos ones used to.