15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996 C4S ring of rust on front discs
Leading reported evidence
Replace pads all round last week
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.
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 remove one of the existing pads, check the surface of the pad for even wear then measure the width of the pad, next measure the swept area on the face of the disk - obviously it should match - if not they're the wrong pads.
Leading evidence: 'Replace pads all round last week' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check surface of the pad' (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.
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 remove one of the existing pads, check the surface of the pad for even wear then measure the width of the pad, next measure the swept area on the face of the disk - obviously it should match - if not they're the wrong pads.
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.
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
Thanks Guys, previous owner has now assured me that new callipers were exchanged recon C4S/turbo , so we'll change pads and go from there.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check surface of the pad
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 would remove one of the existing pads, check the surface of the pad for even wear then measure the width of the pad, next measure the swept area on the face of the disk - obviously it should match - if not they're the wrong pads.
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.
15 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: 20261027T070717Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Had my 996 C4S since September. Always thought a long drive with some enthusiastic braking would get rid of ring of rust on discs. Just driven 150 miles to Devon where she's going in for some paint and the rust ring about 1 inch deep down from circumference is still there. Previous owner put new callipers on, Something is not right. Any thoughts? Thanks!
Definitely something not right there 4076simon, you should have a very small lip of maybe 2mm wide at the circumference of the disk and another on the inner diameter as the disk face meets the weather groove around the top hat diameter. Here is a photo of mine on the Boxster the day I swapped them all for new ones :thumb:
:thumb:
Thanks Guys, previous owner has now assured me that new callipers were exchanged recon C4S/turbo , so we'll change pads and go from there. Can't think discs would be too big?
Cheers
The disks can't be too big.
I would remove one of the existing pads, check the surface of the pad for even wear then measure the width of the pad, next measure the swept area on the face of the disk - obviously it should match - if not they're the wrong pads. Simples.
This thread has come up just as I have got mine back from mot and service, they changed the front pads and I have exactly the same around the outside of my discs. I have checked the part number of the pads they used, and they should be correct for the car. I haven't had chance to take the wheels off and have a look what is happening yet. :dont know:
I changed pads all round last week. One of the fronts had started to break up - tell tale sign was band of rust on the disc there there was no pad surface to make contact!
Hi All
Just an update on this. it appears the reason that the brake pads were not touching the outer inch of the discs is that the wrong brake pad fitting kit was used. it had slipped on both sides and was jamming the upper piston, preventing it from extending and pushing the pad onto the discs. (appears to be the kit for the rear callipers!!) Drove home from the excellent AW Motorsports in Southbourne last night with brakes that were a pleasure to use and no rusty ring around the brake disc edge!
Two new front brake pad fitting kits at £42.50 each from Porsche and an mot with no advisories! (Then and evening of cleaning..;-)
