fullymatted.
Back to search
986Forum

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Add to repair workspace
Open repair workspace
Original source
6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHMetallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Install rotors and only the pads had been changed

Performed · outcome unconfirmed

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

When I put them on I did not install the front brake pad dampening plates or the rear brake pad shims, nor where there any on the the car when I took out the old brake pads and rotors, the rotors actually looked like factory installed rotors and only the pads had been changed on the car as the lip on the rotor was starting to cut into the break wear indicator.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'Install rotors and only the pads had been changed' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'front balancing plates and rear shims' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Install rotors and only the pads had been changed' (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.

Read captured replies

1 matching discussions · 6 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace on the car as the lip

Performed · outcome unconfirmed

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

When I put them on I did not install the front brake pad dampening plates or the rear brake pad shims, nor where there any on the the car when I took out the old brake pads and rotors, the rotors actually looked like factory installed rotors and only the pads had been changed on the car as the lip on the rotor was starting to cut into the break wear indicator.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use ebc reds

Performed · outcome unconfirmed

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

I used the EBC Reds for a short while (until I figured out that they were completely inadequate for track driving), and while they were slightly noisy, I didn't think they were that bad.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Performed · outcome unconfirmed

I've used EBC reds on MANY cars over the last several years.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

front balancing plates and rear shims

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
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 suspect a cause
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.

Suspected cause · Original poster

Really hate to give up the excellent stopping performance :ah: and was hoping it was the front balancing plates and rear shims for the pads that might clear it up.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Recommend street pads

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 · Original poster

Recommended street pads that will give good stopping performance and no noise?

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (6)

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

Install rotors and only the pads had been changed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

When I put them on I did not install the front brake pad dampening plates or the rear brake pad shims, nor where there any on the the car when I took out the old brake pads and rotors, the rotors actually looked like factory installed rotors and only the pads had been changed on the car as the lip on the rotor was starting to cut into the break wear indicator.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Recommend street 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 · Original poster

Recommended street pads that will give good stopping performance and no noise?

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace on the car as the lip

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

When I put them on I did not install the front brake pad dampening plates or the rear brake pad shims, nor where there any on the the car when I took out the old brake pads and rotors, the rotors actually looked like factory installed rotors and only the pads had been changed on the car as the lip on the rotor was starting to cut into the break wear indicator.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace those too

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

My first choice for brake grinding is the rotor shields, as it is easy to bend them when working under there, and if they touch the rotor it makes a sound just like you describe, but that would be constant, unless the rotor is somehow moving laterally, like if a wheel bearing was bad, but I think you just replaced those too.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use ebc reds

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed

I used the EBC Reds for a short while (until I figured out that they were completely inadequate for track driving), and while they were slightly noisy, I didn't think they were that bad.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Performed · outcome unconfirmed

I've used EBC reds on MANY cars over the last several years.

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use tapatalk

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

Sent from my SM-G970U using Tapatalk

Metallic grinding sound when braking. - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported and suspected causes (1)

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

front balancing plates and rear shims

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.

Suspected cause · Original poster

Really hate to give up the excellent stopping performance :ah: and was hoping it was the front balancing plates and rear shims for the pads that might clear it up.

Metallic grinding sound when braking. - 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.

6 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: 20261027T053112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Back in February 2017, I put new EBC Redstuff ceramic brake pads and Centric C-TEK drilled rotors on my car. I have always had a metallic grinding sound when braking since I installed them. When I put them on I did not install the front brake pad dampening plates or the rear brake pad shims, nor where there any on the the car when I took out the old brake pads and rotors, the rotors actually looked like factory installed rotors and only the pads had been changed on the car as the lip on the rotor was starting to cut into the break wear indicator. Could not using the dampening plates and shims be the reason for the metallic grinding sound when braking or is it the pad/rotor combination I put on the car? Right now my rotors and pads look great. The rotors look like no wear has been put on them, no edge on the rotor at all and the pads are still pretty thick. I've only put around 5,700 miles on the car since I put on the pads and rotors on. I have just put up with the sound as the car stops excellent, but it's starting to wear on me to the point I want to address it. What do you all think I need to do to address this? Thanks!

POST 2Original post

If you want quiet braking, put regular street pads on the car. I used the EBC Reds for a short while (until I figured out that they were completely inadequate for track driving), and while they were slightly noisy, I didn't think they were that bad. Like taste in music, tolerance to brake noise is a subjective thing.

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 594179

It's not horrible, I've put up with it for 2 years now lol, but it is just more noise then normal. EBC says they are for street use, but if this is what's causing the noise, I may change them. Really hate to give up the excellent stopping performance :ah: and was hoping it was the front balancing plates and rear shims for the pads that might clear it up. Recommended street pads that will give good stopping performance and no noise?

POST 4Original post

The EBC Redstuff has an anti-squeal pad on the back, so even without the stock shims I wouldn't expect to hear a grinding. I ran them for a good bit and didn't get any metallic grinding on stopping. My first choice for brake grinding is the rotor shields, as it is easy to bend them when working under there, and if they touch the rotor it makes a sound just like you describe, but that would be constant, unless the rotor is somehow moving laterally, like if a wheel bearing was bad, but I think you just replaced those too. So I got nothing...

POST 5Original post

I've used EBC reds on MANY cars over the last several years. They're my choice for street pads, because they're ceramic.... making dust a non-issue. And they've ALWAYS made a grinding noise, more if you don't follow the bed-in directions. And less once they're warm. Sent from my SM-G970U using Tapatalk

POST 6 / ORIGINAL POSTEROriginal post

Quotes source posts: 594188, 594271

I have not replaced the bearings yet, still waiting on some items to arrive, should have everything this Saturday, except the torque wrench, but it should be here by the time I'm ready to torque the axle nuts down. Maybe that will help some? This is good information on the grinding noise with the EBC RedStuff pads. I did the bed-in properly. I really do like the stopping power of my car and the lesser dusting is a plus too. Guess I'll have to weigh benefit of quiet braking against losing some stopping power.

This is a source reference. Confirm exact model applicability in the original material.