Brake Squeal Explained

Brake squealing or squeaking is rarely a sign of trouble. Porsche engineers explain why there is a propensity for brake squeal. Though this is typical of high performance brakes, our superior engineering strives to minimize unwanted brake noise.

Combined fuel consumption in accordance with EU 6: 911 Carrera 4S: 8,9-7,9 l/100 km; CO2 emissions: 204-180 g/km

[leloodallasmultipass]

mine bothered me so much, I had my brakes removed entirely.

[viralityfactor]

This is basically Porsche saying "Stop being bunch of sissies" to the customers and cars are still mechanical and sounds are part of it and dont listen to your Tesla owner friends or neighbors (especially if live in San Francisco)who think this is a problem.

[Clank]

Hahaha look at Porsche being passive aggressive

[visualwarp]

Very nice video. But for those with short attention spans, you can go with the simpler explanation: because racecar

[mftran]

You can have quiet brakes that suck. Or you can have noisy brakes that perform. Pick one.

[seanxu]

I can sum it up in one sentence: powerful brakes squeal, deal with it.

[miata]

This was awful with working at BMW. The daddy money kids would drop $90, 000 on an M car and they were in every Saturday with a “brake noise issue”. They INSIST on getting the “cool yellow ceramic brakes” but ignored us every time to would reiterate these are not going to be what you want

[DarinNederhoff]

Big performance brakes have been prone to this sort of noise for DECADES now. It's not normally a problem if you use them hard from time to time but too many posers sitting in traffic don't get the concept and get annoyed that their 'expensive personal image enhancement object' makes noise and they can't hear their incoming text messages. ;-) Try three hard stops from 70-80 mph (on a clear road obviously) and see if they don't quiet down for a while. Get some heat into the rotors and clear off some of that pad material you've built up while posing in traffic. Once they cool down spray them down to clean the excess brake dust. In many cases that brake noise is merely a cry for help... your Porsche has become bored with your Buick-like driving traits.

[exoterminator-]

Thank you for explaining brake squeal. It's one thing I get constantly asked to fix for people, but they are the same people who think that a car enthusiast is a mechanic.

[zackirstein]

I love all the footage of older Porsche models used in this video, especially that black 991.1 C4S and the beautifully sounding CGT.

[jeebus]

Not to denigrate your other videos but this is, to me, the best video this channel has ever had.

[lxwvandenberg]

Hands down, the best technical video out by a manufacturer.

[richardfay]

I'd grown used to the annoying sound of brake squeak from the large front rotors on my MB C450 AMG, which the MB dealer examined and found to be good. I remember driving a Ferrari 430 Scuderia at Exotics Racing, and hearing the same squeak. Then just the other day, an Audi R8 pulled up beside me, and exhibited the same squeak. After seeing this video, I now consider myself to be proudly driving a car with large (and powerful) front rotors. Thanks, Porsche.

[JamaicanMeCrazy]

We are Porsche. We make some of purest fastest sports cars in the world. We have a team of highly paid engineers that have been trying for decades to remove break squeal. It's never going to happen.. Well never say never. How about this when we solve it you'll be the first to know. In closing it's your state of mind. The squealing is a feature of high performance. True petrol heads know this and love the sound almost as much as they love the sounds of our engine . Drive this for a few more years and you'll come to miss this sound when we go fully electric. Porsche.... There is no substitute.

[edstring]

I like how they spent thousands of dollars making a four minute video just to say "It's normal."

[johnbenton]

This explains why EVERY video of the Aston Martin Vulcan I see it is screaming when people are driving it. This was a much needed video! Really helped me understand :)

[finidamesstechnik]

1:15 Very nice resonance frequency test setup with automatic modal hammer and an older laser vibrometer 👍
Using a similiar (newer) setup for acoustic material testing and measuring natural frequency of components in end of line tests.

[ZDY]

Had the sequel at first on my GTS, went away after a hard drive, never came back.

[marlinjojo]

'3:35 delivering uncompromised safety...' *shows a Carrera GT*

[justinsane]

Thank you for explaining this. I had squeal after a front rotor change on my Boxster GTS.