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I've been using Ferodo 2500 pads for 6yrs or so, as my go-to-go Pads for street/track. They are the ONLY pads I've found that could truly be called "dual use". First 2 seasons, I swapped to OEM during winter, and went back to Ferodo in Spring... now, however, I use it all around (after OEM wore out).
Problem is, my brakes squeal, specially when cold, and in slow speeds. What are the remedies for this? I've done the bedding-in process, and squealing gets a bit better after a pressure wash of the brakes but then comes back. Any ideas?
Why not go back to swapping out pads to OEM in the winter? If you experience noise when they are cold and I assume you don't track over the winter that should do it.
Originally Posted by alexb76
I've been using Ferodo 2500 pads for 6yrs or so, as my go-to-go Pads for street/track. They are the ONLY pads I've found that could truly be called "dual use". First 2 seasons, I swapped to OEM during winter, and went back to Ferodo in Spring... now, however, I use it all around (after OEM wore out).
Problem is, my brakes squeal, specially when cold, and in slow speeds. What are the remedies for this? I've done the bedding-in process, and squealing gets a bit better after a pressure wash of the brakes but then comes back. Any ideas?
Is the pad fitted with the anti squeal pads on the back? If not try a bit of copperslip between the back of the pad and the pistons
Of course, if you are doing that, you might as well just swap the pads. Keep in mind, when you use a more aggressive pad, it leaves behind deposits on the rotor that may cause the street pad to squeal too.
As you're probably starting to figure out, the squealing sound emanates from a harmonic between the back of the pad and the caliper piston, not from the front of the pad and rotor as many people believe. Using a product like Jason posts or a Permatex anti-squeal available from your local auto parts store applied to the back of the pad will reduce or eliminate this. Also, there are caliper piston dampeners from Porsche that look like an adhesive pad with a metal claw attached. These claws fit into the caliper pistons and then the pad adheres to the back of the pad. If you don't have these installed with your pads, you may want to start there. You need to know the ID of your caliper pistons to get the correct ones. They look like this.
My Porsche mechanic buddy game me a set of Porsche pads for the front and a little tube of ant squeak. With a gloved finger, rub a generous amount to the back of the pad.....let dry, about 10 minutes. Repeat with a second coat.
Not a peep. There are things to save a little $$ on, but in my experience factory brake pads arent one of them.
that is not totally true. the noise is the resonance of the pad and rotor, and yes the pad is less mass, and moves more easily, bu the rotor is a speaker too. back plates can help, but not solve the issue..........proper bedding is the way. ive passed out info to about 20 listers, on proper bedding techniques that work on all pads and almost completely illimiates squealing noise no matter how the car is used (Racing or street or both)
if you want the info on the best process, PM me.
Originally Posted by Petza914
As you're probably starting to figure out, the squealing sound emanates from a harmonic between the back of the pad and the caliper piston, not from the front of the pad and rotor as many people believe. Using a product like Jason posts or a Permatex anti-squeal available from your local auto parts store applied to the back of the pad will reduce or eliminate this. Also, there are caliper piston dampeners from Porsche that look like an adhesive pad with a metal claw attached. These claws fit into the caliper pistons and then the pad adheres to the back of the pad. If you don't have these installed with your pads, you may want to start there. You need to know the ID of your caliper pistons to get the correct ones. They look like this.