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YOUR RESEARCHRe-using pads on new rotors
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Install pagid rs29 in the front
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Performed · outcome unconfirmed · Original poster
Whike dissasembling I realise the past owner installed Pagid RS29 in the front which have 90% of meat left.
Leading evidence: 'Install pagid rs29 in the front' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install pagid rs29 in the front' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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The rotors have 200K on them, Never turned, I run soft pads and change them at about 40%.
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Suggestion · Original poster
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?
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I've always used a used rotor to pre-break in pads for use at the track.
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Suggestion
have to change brakes trackside, not having to worry about breaking the pads in while racing is awesome.
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Suggestion
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.
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Suggestion
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.
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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
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..
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.
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.
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
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.
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.
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.
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.
If the rotors are truly long overdue, it's reasonable to expect that there is a decent amount of rotor wear. If you replace just the rotors, the old pad face will not match the freshly-machined rotor; there will be reduced pad contact with the rotor surface until the high spot(s) on the pads wear away.
Without eyeballing (minimally) or measuring with a micrometer the wear on the pads, I'm not comfortable answering the question.
If this was my car, the pads would go into the recycling along with the rotors. Brakes rank pretty high up there on the safety equipment list...in my opinion, trying to save a few bucks by recycling half of some stranger's last brake job just doesn't make sense.
Re-use the pads. You'll be fine. Go easy on the brakes for the first few miles until the pads mate to your new rotors (i.e. don't expect 100% emergency stopping power for the first 100 miles or so).
Single sample,,, My Jeep Wrangler with big tires that gets driven hard, has 250K miles on it.
The rotors have 200K on them, Never turned, I run soft pads and change them at about 40%.
Lots of ways to get from a-b.. I was just giving a example of why you can do it.
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