Os7213

Hi everyone,

Im actually rebuilding my brakes on 4 corners.
The rotors were due and decided to overhaul the caliper, repaint them, install new hardware ect..

Whike dissasembling I realise the past owner installed Pagid RS29 in the front which have 90% of meat left.
I already bought Brembo replacement pads but after this discovery I would like to know what you guys think about using used pads on new rotors?
Should I verify if they are straight ect?

Thanks
Hugo

pdxmotorhead

On the fleet of race cars I've maintained over the years,,
I never put new pads and rotors together , I've always bedded rotors with a used set of pads.
I've always used a used rotor to pre-break in pads for use at the track.

Many answers and opinions...
Nascar does it this way..

strathconaman

Nascars have brakes?

sparks259

Never heard of this before, but of course I live a sheltered life-lol. What about the brand new cars rolling off the assembly line? Surely those rotors and pads are new.

Mike Murphy

Lol

chsu74

This

Dharn55

In the almost 50 years that I have been playing with cars and motorcycles, and more brake work than I can list I have often put new pads without changing the rotors but I don’t think I have ever put on new rotors without also changing the pads. Not saying it is right or wrong, just the way I have always done it.

dan_189

Interesting this is the first i've read about bedding in new rotors with used pads then installing new pads - seems like a lot of work back and forth.

Also not saying its wrong guess its just one way to do it

cds72911

I don't see it as a problem to use old pads on new rotors, but for regular brakes (non-PCCB), pads are inexpensive enough to just use a new set. That way you have as much surface to surface contact with the new flat and parallel surfaces.

Mbren1979

Just did this myself. I decided to put the larger 997 turbo rotors on my 04 C4S. The Akebono pads that i purchased were wrong. The old pads were nearly new so i reused them. No issues at all.

pdxmotorhead

So the biggest reason I started doing it was on a recommendation from a
suspension tuner that did a lot of work on open wheel cars. He had been
doing setups for 40+ years at the time and had enough winning cars that he had my
confidence.

Number 1 the rotors last way longer, the second is the 300 dollar set of pads last longer,
has something to do with the voodoo that happens between the pad and the rotor.

Functionally if you take a set of lightly used rotors and bed in say 5 sets of pads, when you
have to change brakes trackside, not having to worry about breaking the pads in while racing is awesome.

Test and tune days at the oval track s one of the big things you'll see the pro teams
doing is swapping pad set after set so they always have ready to race brakes.

Jumping on a set of raw brakes and driving them to orange rotor is a bad thing.. they don't stop near as well.

I used to maintain a set of pads and a set of rotors just to prep... YMMV.

Porschetech3

+1

Imo000

Sure but what is the point doing all this on a daily driver? I have used old pads with new rotors before but first I put them in a vise and filed them flat.

Prelude Guy

I would return the new pads, if you can, and use the RS29 pads.

su8pack1

That's the way I've done it too.