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Zimmerman Discs with Porterfields Pads = Squealing? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHZimmerman Discs with Porterfields Pads = Squealing? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Replace discs

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Performed · outcome unconfirmed · Original poster
I then replaced my discs with Zimmerman's when the stock wear limit was reached.
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Zimmerman Discs with Porterfields Pads = Squealing? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Fill entire pad edges all round

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Suggestion · Original poster
Do you mean filling the entire pad edges all round to 45 degrees?
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Zimmerman Discs with Porterfields Pads = Squealing? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Leading evidence: 'Replace discs' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill entire pad edges all round' (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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Fill entire pad edges all round

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Suggestion · Original poster
Do you mean filling the entire pad edges all round to 45 degrees?
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Zimmerman Discs with Porterfields Pads = Squealing? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed actions (2)

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Fill entire pad edges all round

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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
Do you mean filling the entire pad edges all round to 45 degrees?
Original post Read captured discussion
Zimmerman Discs with Porterfields Pads = Squealing? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace discs

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
I then replaced my discs with Zimmerman's when the stock wear limit was reached.
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Zimmerman Discs with Porterfields Pads = Squealing? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

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POST 1 / ORIGINAL POSTEROriginal post

I switched to new Porterfield R4S pads when the stock ones worn out. Had stock discs on then. Everything was well. I then replaced my discs with Zimmerman's when the stock wear limit was reached. The pads started squealing The strange thing is they squeal when they get warm. The 1st few stops are fine but once it gets up nice and warm, it's starts. Does anyone has similar experiences with Zimmerman Rotors and Porterfield R4S pads? My rears are fine as the stock rotors are still well within the wear limit. I'm thinking of getting new stock rotors and really hope that'll solve the problem.

POST 2Original post

Hi, Before rushing out to buy new rotors, try removing the pads and with a file Chamfer the edges of the Pad Material 45°, that will usually reduce/eliminate squealing. The Pads were probably Chamfered from the Factory to begin with, but have worn smooth, re-establishing the Chamfer will probably do the trick. Hope this helps... Happy Motoring!... Jim'99

POST 3 / ORIGINAL POSTEROriginal post

Thanks. I'll try this out. Do you mean filling the entire pad edges all round to 45 degrees? I notice the 2 top edges are already 45 degrees...

POST 4Original post

Hi, Yes, I suspect that the leading and trailing edges were once 45° as well but have worn smooth. A squeal is just an audible vibration and the pads will vibrate when coming into contact with the Disc, but only at the edges. By Chamfering the egdes, you pull the contact point closer to the center of the Pad where the Steel Backing plate is stronger and less prone to vibrate. Hope this helps... Happy Motoring!... Jim'99

POST 5 / ORIGINAL POSTEROriginal post

Thanks Jim. My mechanic did it for me yesterday and the squeaking is gone

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