Welcome to the North American Subaru Impreza Owners Club Saturday November 1, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Click here to visit TireRack
Brakes & Suspension Forum sponsored by The Tire Rack

Losing traction? Need new tires?
Click here to visit the NASIOC Upgrade Garage...
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Brakes, Steering & Suspension

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-22-2013, 08:48 AM   #1
CBC_North
Scooby Newbie
 
Member#: 338523
Join Date: Nov 2012
Default Brakes grinding after parked

Have had this problem for the last few weeks. When I am leaving my parking garage, the first few times I apply my brakes I hear a grinding sound. It is only the first 4 or 5 times and then I do not hear it again until I have parked my car for a while. I have actually gotten into a habit now of just touching the brakes a few times when I first start out to get rid of the sound. It doesn't seem to affect the braking in any way and there's no difference in the pedal feel. It also happens regardless if the car is moving straight or turning and only when I am actually applying the brakes.

I had originally assumed it was rust clearing off the surface of the rotors after being parked. But now that I have my summers on I can see the surface of the rotor and noticed the car makes the noise even when the rotors have no rust. Just wondering what this could be?

Also, it's a 2009 wrx with everything braking related being stock.
* Registered users of the site do not see these ads.
CBC_North is offline   Reply With Quote
Old 04-22-2013, 12:15 PM   #2
emusoda
Scooby Newbie
 
Member#: 211869
Join Date: May 2009
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2006 STI
Aspen White

Default

Check your pads. A metal on metal grinding noise from the brakes usually means you need to replace them
emusoda is offline   Reply With Quote
Old 04-22-2013, 01:41 PM   #3
CBC_North
Scooby Newbie
 
Member#: 338523
Join Date: Nov 2012
Default

If this was the case wouldn't the sound stick around constantly and not go away after pumping the brakes a few times?
CBC_North is offline   Reply With Quote
Old 04-22-2013, 01:58 PM   #4
GT11
Scooby Specialist
 
Member#: 128002
Join Date: Oct 2006
Chapter/Region: International
Location: The moon
Vehicle:
0000 four door sedan
Poop color

Default

It's because there is a very light layer of rust on your rotors when you park it for a while and the pads are scrubbing the rust away during the first few brake applications. It's completely normal.
GT11 is offline   Reply With Quote
Old 04-22-2013, 10:27 PM   #5
its byron
Scooby Newbie
 
Member#: 345847
Join Date: Feb 2013
Chapter/Region: MWSOC
Location: Dayton
Vehicle:
2004 WRX STI
WRB- 20PSI on 93oct

Default

I have this same issue, and my buddies were telling me my rotors were shot and my pads were gone, but ive had the car for just over a month and the dealership said my pads were fine. seeing as my friends arent mechanics i thought the same thing GT11 just said.
its byron is offline   Reply With Quote
Old 04-22-2013, 10:35 PM   #6
chazly413
Scooby Specialist
 
Member#: 151079
Join Date: Jun 2007
Chapter/Region: MAIC
Location: College Park, MD
Vehicle:
2005 2.5RS RBP
motec system exhaust-RIP

Default

Quote:
Originally Posted by GT11 View Post
It's because there is a very light layer of rust on your rotors when you park it for a while and the pads are scrubbing the rust away during the first few brake applications. It's completely normal.
Yeah, I get the same thing except I don't really have a grinding sound but more of a rubbing/whirring sound. It also gives my pads a few brief seconds of really high bite before the rust is rubbed off. (hehe rubbed off)
chazly413 is online now   Reply With Quote
Old 04-23-2013, 12:30 AM   #7
Ikkitousen
Scooby Newbie
 
Member#: 354304
Join Date: Apr 2013
Location: OC
Vehicle:
2012 WRX

Default

Ya I believe it is normal...happens after a car wash every time.
Ikkitousen is offline   Reply With Quote
Old 04-24-2013, 05:57 PM   #8
bootystank
Scooby Newbie
 
Member#: 354475
Join Date: Apr 2013
Chapter/Region: NESIC
Location: Mendon MA
Vehicle:
2011 WRX Hatch
Satin white pearl

Default

My Hawk HPS pads grind pretty bad after my car has been parked all night but it goes away after a few feet of pumping the breaks. There also fairly noisey in general.
bootystank is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 10:06 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.