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Brake noise, is there a fix? Or brand new rotors?


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Hey guys,

 

Recently got new pads for my Subaru Legacy which has been fitted with v7 brembos.

 

The new pads compounds are much harder I guess compared to my old ones, as these ones (Dixcel EC) are meant to create less dust.

 

When I first drive the car and say reverse down my driveway, every time I brake a little bit the brakes/rotors screech like there's no tomorrow, but after I brake a few more times its gone. I've come to the conclusion that it's corrosion on my brake rotors, that's why when I don't drive it for a bit, moisture gets on my rotors and then i'll have to brake a few times to rid of the sound.

 

It's really annoying, especially when you have heaps of neighbours around and you leave the house before most people wake up.

 

Any recommendations of what I could do? Cheaper the better, so obviously new rotors that are resistant to rust/corrosion will be last resort.

 

Thanks guys in advanced :)

Ben

 

 

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9 minutes ago, benyu0926 said:

Hey guys,

 

Recently got new pads for my Subaru Legacy which has been fitted with v7 brembos.

 

The new pads compounds are much harder I guess compared to my old ones, as these ones (Dixcel EC) are meant to create less dust.

 

When I first drive the car and say reverse down my driveway, every time I brake a little bit the brakes/rotors screech like there's no tomorrow, but after I brake a few more times its gone. I've come to the conclusion that it's corrosion on my brake rotors, that's why when I don't drive it for a bit, moisture gets on my rotors and then i'll have to brake a few times to rid of the sound.

 

It's really annoying, especially when you have heaps of neighbours around and you leave the house before most people wake up.

 

Any recommendations of what I could do? Cheaper the better, so obviously new rotors that are resistant to rust/corrosion will be last resort.

 

Thanks guys in advanced :)

Ben

 

 

 

Are they racing pads by anychance? I've got Endless pads all around and same thing as well. Only does it on little braking but goes away after a bit of driving. Pretty sure it's normal to make that screeching sound with harder racing pads and that's with my car parked inside a closed garage.

Edited by BeastGRB
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5 minutes ago, BeastGRB said:

 

Are they racing pads by anychance? I've got Endless pads all around and same thing as well. Only does it on little braking but goes away after a bit of driving. Pretty sure it's normal to make that screeching sound with harder racing pads and that's with my car parked inside a closed garage.

Nah they're not racing pads, just for street application.. Yea same thing here, I park my car inside as well.. Have you looked into getting anything done about it? It's quite loud and it just doesn't sound nice at all... 

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1 hour ago, benyu0926 said:

Nah they're not racing pads, just for street application.. Yea same thing here, I park my car inside as well.. Have you looked into getting anything done about it? It's quite loud and it just doesn't sound nice at all... 

 

Yeah, my bad I crossed it out as I had a quick search of the pads you have. Honestly, nope. As far as I know I've got new OEM rotors roughly around 10xxx ish k's ago so never have I thought of replacing that. I've always assumed that it's normal for racing pads to be screechy which mine are. I was at a car meet a few weeks back and only parked my car for about 2 hours or so at night and after driving it was very very noisy. 

 

Oh, did you get your rotors skimmed? Are they uneven? 

 

 

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46 minutes ago, BeastGRB said:

 

Yeah, my bad I crossed it out as I had a quick search of the pads you have. Honestly, nope. As far as I know I've got new OEM rotors roughly around 10xxx ish k's ago so never have I thought of replacing that. I've always assumed that it's normal for racing pads to be screechy which mine are. I was at a car meet a few weeks back and only parked my car for about 2 hours or so at night and after driving it was very very noisy. 

 

Oh, did you get your rotors skimmed? Are they uneven? 

 

 

Yea same here, parked for maybe an hour and reversed out and was loud as heck..

 

Yea I did get my rotors skimmed just last December, they should be pretty even but I'm planning on checking them tomorrow..

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i have stock v7 sti brembos and have enquired about this previously as kinda embarassing (though out of all the noises my car makes this is probably the quietest so brakes are the least of my neighbors concern). i also have seen and heard same issue from several other v7 sti owners. low speed brake squeal is very common. i am surprised yours goes away after a bit though, mine is always kinda there at low speeds and can be somewhat embarassing, only squeals when i'm coming to a full stop at the last slow speed portions. i don't actually hear mine much any more, i think my brain has just tuned it out along with several other strange noises cars been known to make. 

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Mine were the same, V7  and V11 also - in reverse only. Enquired with racebrakes.co.nz and they said it's a common issue with this type of calipers (harmonic motion). Copper grease or that spay-on CRC Brake Quiet stuff help a lot. The latter actually helped to eliminated the squealing, didn't get to test it long enough as the car got written off..

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8 hours ago, Joker said:

yikes to the above!

 

the Mrs' Mazda 3 does similar thing, only after sitting for a while or over night in the rain + reverse only

 

F

My Mrs' Mazda does the same. Been meaning to chamfer the back edge to see if it helps

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10 hours ago, sobanoodle said:

Mine were the same, V7  and V11 also - in reverse only. Enquired with racebrakes.co.nz and they said it's a common issue with this type of calipers (harmonic motion). Copper grease or that spay-on CRC Brake Quiet stuff help a lot. The latter actually helped to eliminated the squealing, didn't get to test it long enough as the car got written off..

Did you keep the back plate of the brake pads when you install with em? Or had them removed?

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I had this problem with my 2pot fronts, new pads and skimmed rotors didnt help, turns out the calipers were seized and rusted through, not likely the case for you but wouldnt hurt to check if they are starting to seize 

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8 minutes ago, McMatty said:

I had this problem with my 2pot fronts, new pads and skimmed rotors didnt help, turns out the calipers were seized and rusted through, not likely the case for you but wouldnt hurt to check if they are starting to seize 

Awesome, will definitely check.. Thanks 

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  • 2 weeks later...
On 7/7/2017 at 9:25 AM, sobanoodle said:

Fixed the problem entirely, got new front rotors as they were warped and were already at minimum thickness, so I grabbed some DBA T2 Slotted rotors and now there's not a sound from my brakes!!!! :D

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1 hour ago, benyu0926 said:

Fixed the problem entirely, got new front rotors as they were warped and were already at minimum thickness, so I grabbed some DBA T2 Slotted rotors and now there's not a sound from my brakes!!!! :D

 

 

I had a brand new set of T2 as well, they were noiseless for a month or so, then started squealing :D 

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