Always changes pads and discs together! A lesson learned

[anonymous-user]

I always thought that old pads with meat would bed to new discs and all would be fine in a short period of time. Wrong.

I changed discs and left old pads that had plenty of meat. I thought that the 'rebate' on the pad edges where the olds discs became lipped would gradually wear away as the old pads starts mating to the surface of the new disc. Wrong.

I ended up changing all pads to new because the mileage I do is so low that it would have taken about 1 year for the pads to bed in properly. In that time the disc would likely also profile to the shape of the pads somewhat.

All is good now with new pads having had some miles put on them over the past days but moral of the story is get them done together no matter how much meat is left on the pads

Nothing worse than having new discs and still having reduced braking efficiency because you're a tight arse!

[Eighteeteewhy]

Don't see the problem myself. If there's plenty of life left in the pads it wouldn't take them long to 'bed in. To the new discs.
And you're not going to change discs every time you change pads are you?

[anonymous-user]

My point was that if you are doing super low miles then get the changed unless you are happy with reduced braking efficiency. Im doing around 1k per year miles.

[Eighteeteewhy]

RC1 said:

My point was that if you are doing super low miles then get the changed unless you are happy with reduced braking efficiency. Im doing around 1k per year miles.

Ah, that is super low mileage.

Something special?

[littleredrooster]

...or just flatten the pads off with some coarse glasspaper on a surface plate.

[AdeTuono]

If I was only doing 1,000 miles a year, my discs would probably only need changing every 50 years or so.

[fangio]

littleredrooster said:

...or just flatten the pads off with some coarse glasspaper on a surface plate.

^^^^^^^^^^^^

This!

[danjama]

Pads are pretty damn cheap anyway so why not...

[Welshbeef]

danjama said:

Pads are pretty damn cheap anyway so why not...

Really? Mine are £180 for rears for OEM.

Anyway got to ask why did you change the disc ? Did you try to squeeze three sets of pads out of them?
Pads age and become brittle so low milage they could be shot.

If I were getting new discs I'd have new pads as I wear then out two pads to one disc. In your situation what condition are the pads in? How much are new pads? It is possible to rasp the pads to get rid of big lips then use glass paper to get them to a smooth finish (but it really does depend how much are new pads).