911uk

Brake disc replacement interval

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHBrake disc replacement interval

Leading reported evidence

Use downside is disc wear

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed
Now with safer materials used the downside is disc wear.
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Brake disc replacement interval

Frequently discussed work

Recommend disc replacement also

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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

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Suggestion · Original poster
The rear pads on my 996 targa need replacing and so I took it to a garage for a quote where they recommended disc replacement also.
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Brake disc replacement interval

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Leading evidence: 'Use downside is disc wear' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend disc replacement also' (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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Recommend disc replacement also

Suggestion or failed attempt

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion · Original poster
The rear pads on my 996 targa need replacing and so I took it to a garage for a quote where they recommended disc replacement also.
Original post Read captured discussion
Brake disc replacement interval

Recommend disk replacement

Suggestion or failed attempt

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
In the USA the garages would typcially reove this lip a couple of times and only recommend disk replacement when the thickness had been reduced too much (this was on my SUV), has anyone else had this lip removed and saved on cost of disk replacement?
Original post Read captured discussion
Brake disc replacement interval

Frequently discussed actions (3)

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

Recommend disc replacement also

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
The rear pads on my 996 targa need replacing and so I took it to a garage for a quote where they recommended disc replacement also.
Original post Read captured discussion
Brake disc replacement interval

Recommend disk replacement

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
In the USA the garages would typcially reove this lip a couple of times and only recommend disk replacement when the thickness had been reduced too much (this was on my SUV), has anyone else had this lip removed and saved on cost of disk replacement?
Original post Read captured discussion
Brake disc replacement interval

Use downside is disc wear

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
Now with safer materials used the downside is disc wear.
Original post Read captured discussion
Brake disc replacement interval

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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.

911uk: 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: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

The rear pads on my 996 targa need replacing and so I took it to a garage for a quote where they recommended disc replacement also. The reason for this was that there is a lip or ridge at the disc circumference. In the USA the garages would typcially reove this lip a couple of times and only recommend disk replacement when the thickness had been reduced too much (this was on my SUV), has anyone else had this lip removed and saved on cost of disk replacement?

POST 2Original post

Yes, this is known as skimming the discs and I had it done on my Racing Puma on which the discs were pricey. On most everyday cars it's cheaper to replace them. The manufacturer will have a tolerance that it is unwise to go below for disc thickness and so the garage should measure the disc in a few places with a micrometer for an accurate assessment In the days of asbestos pads disc replacement was unusual. Now with safer materials used the downside is disc wear.

POST 3Original post

Porsche allow 2mm of disc wear (1mm each side), so find out what a new one is and what yours actually measure and Bobs your Uncle.

POST 4Original post

This was posted by Richard H recently, very useful. Also remember the wear rate increases as the disks get worn.

POST 5 / ORIGINAL POSTEROriginal post

Thanks for the replies. As an engineer I find it really hard to believe that just 1mm of wear per side is the max allowed, from a structural point of view this level of wear should not affect the disk,,

POST 6Original post

I'm not sure what the thickness of the standard discs are on my 997 which would be interesting to find out as I have a report from an OPC which gives the minimum requirement before they are changed. IIRC though the fronts are 34mm and the rears are 28mm. If that is the case then the previous comment by neil_c would appear to be true.

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