Replace discs and pads together? ?!

Anihilator

Paradigm wrote: »

I've never really undertood this. 3-4k for rear pads is nothing, they're still almost new so why replace them?

The "bedded in" issue doesn't wash surely? The old pads will "bed in" to the new discs in the same way they "bedded in" when they were fitted, won't they?

New discs & new pads will still have to do the same!

Ok they're not that expensive but why replace if not needed?

I think its too do with the eveness of the braking If I understand correctly.

Old pads will wear into the abnormal discs thus making the braking more even. These pads are therefore worn in an unusual pattern and when new discs go on do not fit properly and cause uneven braking which is dangerous and damages the brakes quicker

for £40 its not worth the hassle.

movingforward2010

Anihilator wrote: »

I think its too do with the eveness of the braking If I understand correctly.

Old pads will wear into the abnormal discs thus making the braking more even. These pads are therefore worn in an unusual pattern and when new discs go on do not fit properly and cause uneven braking which is dangerous and damages the brakes quicker

for £40 its not worth the hassle.

This is my point, but i paid £90 for them to replace the pads!:eek: and now they need doing again, i feel they should replace the pads free of charge for me at the dealership!

i would of had discs and pads done at the same time if they told me this.

KeithP

Just continue to use your current pads.

They will very quickly bed in to new discs.

Then change the pads when they wear out.

Paradigm

Anihilator wrote: »

I think its too do with the eveness of the braking If I understand correctly.

Old pads will wear into the abnormal discs thus making the braking more even. These pads are therefore worn in an unusual pattern and when new discs go on do not fit properly and cause uneven braking which is dangerous and damages the brakes quicker

for £40 its not worth the hassle.

I don't doubt what you say but when the new pads were fitted to the old discs wouldn't there be uneven braking until they had worn in? I don't see any difference to having new discs fitted & using the nearly new pads!!

£90 for pads that maybe are not needed is something I'd be looking at.

dopester

How many miles have you done since they changed the pads? (Edit: I read your original post again... 3,000 - 4,000 miles)

As I understand it, it was on the same day, but later on, they also told you about needing new discs.

I've got some Mintex brake discs (front) on my ebay watch-list. £42 delivered. Good quality and I wouldn't buy direct from the stealer. Sourced my good quality front pads for £24 from GSF. Got a bargain on my last set of (rear) Mintex pads for £8 delivered from ebay.

datostar

KeithP wrote: »

Just continue to use your current pads.

They will very quickly bed in to new discs.

Then change the pads when they wear out.

But those old pads could be grooved or unevenly worn across the faces, causing braking inefficiency until they do bed in (probably more of a problem when most needed under emergency braking). Probably won't last long either, meaning another pad replacement job, and maybe discs again if the manky old pads have scored or warped them. I'd have them changed as a matter of course.

goldspanners

these days it is best to replace pads and discs together due to the harder compound used in modern brake pads.
as for using your old pads that only have 4k on them max i would probably sand them down and re fit them to your new discs if they are as you say brand new, if i had any concern at all about them i would replace them, rear pads are usually even cheaper than front pads which are usually cheap.
the life you can expect from a set of discs is all relative to how low the original pads got,the hardness of the friction material (some bigger brands use a harder compound that is matched to thier discs)
the only real way to check your brake discs is to find out how thin the manufacturer states is worn, its sometimes found printed on to the brake discs hub area. use a proper caliper to measure this.