K-A

The other day a loud brake screech/squeal sound popped up. Only while cold and goes away when warmed up. It happens at any speed while it’s happening. Pretty embarrassing, lol. It has that steel-on-steel sound that you hear when GT3’s or high performance cars brake sometimes.

Didn’t happen at all before. Gonna add it to my little list for when I take it into the dealer. Brakes perform perfectly and oddly they seem to have gotten better ever since this “screech” episode started. It’s like they bite harder now. But I’m sure that’s in my head. They’re at about 70% last time I checked.

Anyone experienced this, or know what the tech may have to do to solve it, or if there’s some self remedy?

Thanks.

erko1905

I usually try bringing the pads up to temp with several hard decels when my pads get super loud, to "re-bed" them in a way, it usually helps. Admittedly I'm not using OEM compound, so YMMV

K-A

erko1905

You do have a point. OEM material is a bit softer, so it could make a difference.

I'm surprised that you think these are "expensive brakes" though, makes me think you've been using your dealer, and obviously nothing wrong w that.

However, I found that as long as you're not purchasing from/getting installed at the dealer, both the OEM pads and rotors are fairly affordable. I think the rotors are the usual Textar rotors, maybe 400 a pair? Need to check the pad manufacturer but those are also very affordable, sub 200 per pair I think roughly speaking, don't quote me on these I'm going by memory. Technically it's a DIY to swap pads and rotors too (even though I don't have the skills, tools or the space for it). For comparison, I got a quote from my local dealer for a brake pad and/or rotor swap and it was an eye popping number.

Having a good, local indy who knows what they're doing really helps the ownership experience imho: sourcing cheaper parts, not getting hosed on labor, track prep etc. You can still take the car to the dealer for warranty but I just don't understand their pricing on regular maintenance items.

K-A

OH yeah, anything out of warranty goes to an Indie. Too many amazing Porsche Indies who charge a fraction of dealer prices to actually pay dealers. All my services (barring my dealer has some insane discount) and anything out of pocket will go to an independent shop, such as the extremely highly knowledgable and reputable one I took my Macan to for service. Also, at Indies you get to deal directly with the owner and the people who work on your car (so if you're OCD and very particular like me, you can express that right to the source), so contrary to how some only-dealer birds think, I actually feel more comfortable with the service. Though I do take my car to my dealer for warranty claims as I have an awesome SA who I can't say enough good things about, as well the dealer is top notch.

I just mean "expensive" in the sense where any Porsche brakes aren't "cheap" but it is good to know that they're not "insanely expensive" when not being up charged by dealers.

kuma1416

You're lucky the brakes only squeal when they're cold. Mine squeal al the time.

LexVan

This has been going on hear (see what I did there!) since the 991 was launched in mid-year 2012. What you hear is normal. I've never heard my brakes screech in over 50,000 miles. Do a few hard stops, and it will improve (your brakes will last about 100,000 miles, so don't fret), only to come back. Maybe my MasterBlaster helps, too....during my wash routine.....but it's done so seldom.....maybe not. Others here have switched pads with good results.

StormRune

Any chance you had washed the car just before the squealing started, especially a commercial touchless one with high pressure side-sprays? If car-wash spray wax/sealant or wheel cleaner got on the pads and rotors I could see this happening. This can especially happen if you don't bring the rotors up to temperature to dry them out and the chemicals dry on the pads and rotors, even after a DIY car wash.

My wash routine consists of the wash, a drying pass, a quick run to throw off any water I got on the rotors via centrifugal force and heating the brakes, then another careful touch-up pass on the car and a cleaning pass on the wheels (especially the barrels) to clean off the rust slung out of the rotors. Fortunately I have widely-spoked wheels that makes the barrel cleaning fairly easy.

K-A

LexVan

I think so, for a non-tracked car. I'll get over 100K for sure. You should easiy expect +75K. We talked about this a couple weeks ago.....many agreed with +75,000 miles.

LexVan

For your weekend reading pleasure:

https://rennlist.com/forums/991/1024598-squeaky-brakes.html



https://rennlist.com/forums/991/833606-991-carrera-s-brake-squeal.html



https://rennlist.com/forums/991/940017-update-with-my-brake-squeak-situation.html





https://rennlist.com/forums/991/938909-brake-squeal-is-driving-me-nuts.html

K-A

Bemo

Mine squeak occasionally but as LexVan pointed out, few hard stops make that go away for a while.
When I say hard stop I mean HARD stop, allow me to illustrate:
The wife is reading her cell phone, upon braking, she flies forward and drops her cellphone in the footwell, proceeds to scream and even slaps me upside the head.

I'm laughing and taking it in stride.
That's how I know I'm doing it right and killing 2 birds with one stone:
Stopping the brake squeak and pissing off the wife...which starts a different kind of squeak but that's more of a drone, no known cure!

Pick your squeak......

jnolan

If you have PCCB you will get 75k+ miles out of them, but you didn’t say that you have PCCB and looking at your profile picture, it does not appear you do.

Needsdecaf

Mine squeal all the time at low speeds.