Brake Squeal + Compound
#1
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Hi, all. 1st time P-car owner here w/ a new-to-me 991.1 C4S; currently living life with a lot of brake squeal. Seems like its peaked up quite a bit as the weather has gotten hotter but I've only had the car for a couple of months and am still learning what 'normal' looks like. Before I went aftermarket for pads, 'normal' for my Moupe (E86) was to squeal like a banshee as well, due to the compound, but that was only in temps below ~55F.
I've got a little left on the certified warranty so I could take it in so I can be told it's normal and fine. However, I'm contemplating digging in myself and to get better acquainted the car as I like to get my hands dirty.
Looking around on forums and YT, I'm not seeing much in the way of people putting anti-squeal on pads or using pad shims but the picture for the OE pads on Suncoast's site looks like there might already be a compound on the pad backing (it looks like there is a removable film). Is that the case?
If so, I'm wondering if the dealer and separate PPI inspections may have degraded what was there. The pads had a good amount of meat still on them so the pads have not been replaced.
The noise is slightly better after a wash (wkly or bi-wkly depending on use) but I'm inclined to think that dust build-up isn't that chronic of a problem.
I've got a little left on the certified warranty so I could take it in so I can be told it's normal and fine. However, I'm contemplating digging in myself and to get better acquainted the car as I like to get my hands dirty.
Looking around on forums and YT, I'm not seeing much in the way of people putting anti-squeal on pads or using pad shims but the picture for the OE pads on Suncoast's site looks like there might already be a compound on the pad backing (it looks like there is a removable film). Is that the case?
If so, I'm wondering if the dealer and separate PPI inspections may have degraded what was there. The pads had a good amount of meat still on them so the pads have not been replaced.
The noise is slightly better after a wash (wkly or bi-wkly depending on use) but I'm inclined to think that dust build-up isn't that chronic of a problem.
Last edited by bosstones; 06-20-2024 at 03:56 PM.
#2
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I wasn’t used to the amount of squeak coming from the brakes as well when I picked up my GTS last year. The pads still had plenty left in them so I took it into the dealer to have them look at them. One of the things I found out was that the humidity plays a large part in the noise down in Houston. To be clear, I only hear noise when I’m lightly on the brakes at low speed.
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bosstones (06-25-2024)
#3
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my brakes are always a bit squeeky. especially if youre driving softly. Once you get some heat in them, they tend to quiet down. They are probably just a slightly heartier compound than the brakes you would find in other cars.
If you care about quiet, i believe the hawk ceramic performance are decent at stopping while being quiet and low dust.
If you care about quiet, i believe the hawk ceramic performance are decent at stopping while being quiet and low dust.
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bosstones (06-25-2024)
#4
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Best way I've found to get rid of break squeal is to use the breaks. Find a safe road where you can get the car up to speed (100mph or so) and stand on the brakes to the point you engage the ABS. Do this 5 or 6 times until you start smelling the brake pads. This should eliminate your squeal for a couple of months.
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Tier1Terrier (06-25-2024)
#5
Track Day
Thread Starter
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I wasn’t used to the amount of squeak coming from the brakes as well when I picked up my GTS last year. The pads still had plenty left in them so I took it into the dealer to have them look at them. One of the things I found out was that the humidity plays a large part in the noise down in Houston. To be clear, I only hear noise when I’m lightly on the brakes at low speed.
my brakes are always a bit squeeky. especially if youre driving softly. Once you get some heat in them, they tend to quiet down. They are probably just a slightly heartier compound than the brakes you would find in other cars.
If you care about quiet, i believe the hawk ceramic performance are decent at stopping while being quiet and low dust.
If you care about quiet, i believe the hawk ceramic performance are decent at stopping while being quiet and low dust.
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I've thought about going to ceramics once my warranty is over next year (unless the pads need replacing sooner) but am on the fence. I put ceramics (Akebono) on my N55 sled and, while the reduction in dust is great, I feel like the stopping power has degraded over time despite there being plenty of meat left on the pads (and rotors). I just bled the brakes earlier this year, too. I thought maybe it was just me but I've had a few co-workers have the same complaint.
Best way I've found to get rid of break squeal is to use the breaks. Find a safe road where you can get the car up to speed (100mph or so) and stand on the brakes to the point you engage the ABS. Do this 5 or 6 times until you start smelling the brake pads. This should eliminate your squeal for a couple of months.
#6
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Best way I've found to get rid of break squeal is to use the breaks. Find a safe road where you can get the car up to speed (100mph or so) and stand on the brakes to the point you engage the ABS. Do this 5 or 6 times until you start smelling the brake pads. This should eliminate your squeal for a couple of months.
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JRitt@essex (07-01-2024)
#7
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Definitely a proper bed in will aid in preventing, and sometimes even solving the squeals we get.
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#8
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I still have the Porsche factory stock pads in my 991.1 GTS with PCCB brakes, you know, the ones that are supposed to squeal from everything I have read.
In the almost 6 years that I have had it, they have never squealed at all under any condition...never as in zilch!
Maybe you have aftermarket pads?
In the almost 6 years that I have had it, they have never squealed at all under any condition...never as in zilch!
Maybe you have aftermarket pads?