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Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHRear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Check other axle

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

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Suggestion

I would replace both of them and check the other axle to see if it has the "lip" on the edge like your rears look like they have.

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Check other axle' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check other axle' (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.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 4 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace disc, the ruined pads will ruin the new disc

Suggestion or failed attempt

No successful repair reported for this finding.

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0
Unsuccessful attempts
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Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

And then when you replace the disc, the ruined pads will ruin the new disc.

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace of them

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I would replace both of them and check the other axle to see if it has the "lip" on the edge like your rears look like they have.

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace pads

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I hope you replaced all the pads on that axle, not just the one wheel

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace pads again as they will be worn

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

You may need to replace the pads again as they will be worn to match the scored rotor

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (8)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check other axle

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I would replace both of them and check the other axle to see if it has the "lip" on the edge like your rears look like they have.

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace disc, the ruined pads will ruin the new disc

No successful repair reported for this finding.

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0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

And then when you replace the disc, the ruined pads will ruin the new disc.

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace of them

No successful repair reported for this finding.

0
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Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I would replace both of them and check the other axle to see if it has the "lip" on the edge like your rears look like they have.

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace pads

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I hope you replaced all the pads on that axle, not just the one wheel

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace pads again as they will be worn

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

You may need to replace the pads again as they will be worn to match the scored rotor

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace rotor

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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion · Original poster

Should I replace the rotor?

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Suggestion

You need to replace the rotor.

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use small putty knife

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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion

The dampers will be stuck to the pad, use a small putty knife to separate it from the pad and you can reuse them if you are even slightly careful.

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use tapatalk

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Suggestion · Original poster

Sent from my SM-N900V using Tapatalk

Original post Read captured discussion
Rear Brake Grinding - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 986Forum: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I was having an issue with the driver's side rear caliper making a real bad grinding noise. When I took out the pads, I found out that one of the vibration dampers had stuck to one of the pads. I got the pads out...and ultimately put in new pads and dampers. But the noise is still there! The rotor is scored quite badly...could that be the problem? Should I replace the rotor? Take a look: Thanks! Sent from my SM-N900V using Tapatalk

POST 2Original post

No, its just fine. Rotors are not supposed to be smooth on the surface Uh YES!! You need to replace the rotor. That looks like it was grinding for more than a few miles. How long have they been grinding I'll bet the pad was down to the metal backing plate. I hope you replaced all the pads on that axle, not just the one wheel You may need to replace the pads again as they will be worn to match the scored rotor Look on ebay for Meyle rotors and you can find them for $75-$85 a pair. I would replace both of them and check the other axle to see if it has the "lip" on the edge like your rears look like they have. The rotors have only a 2mm wear from new to worn out The dampers will be stuck to the pad, use a small putty knife to separate it from the pad and you can reuse them if you are even slightly careful. If your brake fluid has not been changed in the last 2 years, you need to do a flush, replace, and bleed at very least, bleed the brakes BTW, it's always nice to introduce yourself on your first post And without pics, it ain't real

POST 3Original post

I'd never put new pads onto a disc that bad. It'll ruin the pads. And then when you replace the disc, the ruined pads will ruin the new disc. And so on.

POST 4Original post

Did you measure the thickness of the rotor? On the photo it looks like it is below the limit. If the thickness is OK and you have some mm left you can bring the car or the rotor to a shop that is able to lathe machining it. Regards, Markus

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