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Brakes & Suspension Forum sponsored by The Tire Rack |
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12-02-2019, 03:44 PM | #1 |
Scooby Newbie
Member#: 316476
Join Date: Apr 2012
Chapter/Region:
SCIC
Vehicle:12 WRX WRB |
Gouges on front rotors
Took the car to the track 2 weeks ago. After 1 session, i noticed these grooves on my front rotors. See pic. Both front rotors have this issue. What would cause this problem?
I also noticed weak inital bite now when i step on the brake pedal. I have OEM brembo pads. TIA
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12-02-2019, 03:46 PM | #2 |
Scooby Newbie
Member#: 316476
Join Date: Apr 2012
Chapter/Region:
SCIC
Vehicle:12 WRX WRB |
Took a closer look and they look like pad deposits...
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12-02-2019, 04:15 PM | #3 |
Scooby Specialist
Member#: 220971
Join Date: Aug 2009
Chapter/Region:
South East
Location: NC
Vehicle:2004 Impreza |
Pads operating over their temp range, take the pads out and i’ll bet they’re cracking. OEM pads are designed for street use, not track use, hence track pads.
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12-03-2019, 05:56 PM | #4 |
Scooby Newbie
Member#: 316476
Join Date: Apr 2012
Chapter/Region:
SCIC
Vehicle:12 WRX WRB |
I'll check the pads this weekend. Is there a need to resurface the rotors though?
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12-03-2019, 06:36 PM | #5 |
Scooby Specialist
Member#: 220971
Join Date: Aug 2009
Chapter/Region:
South East
Location: NC
Vehicle:2004 Impreza |
If you’re going to bed in new pads, then they should be measured and resurfaced if within spec.
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12-04-2019, 10:52 AM | #6 |
Scooby Guru
Member#: 120
Join Date: Jul 1999
Chapter/Region:
AKIC
Location: Where the Navy sends me...
Vehicle:1997 Legacy 2.5GT 1996 Impreza coupe |
I haven't had a set of rotors resurfaced in I don't know how long. I'm a fan of just using a Scotchbrite disk on a drill to scuff up the rotor faces. Has worked fine for me with street and track pads for years now. With that said, I've never had to contend with heavy pad deposits like that.
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12-04-2019, 01:25 PM | #7 |
Scooby Newbie
Member#: 316476
Join Date: Apr 2012
Chapter/Region:
SCIC
Vehicle:12 WRX WRB |
I can try using scotchbrite. Or maybe some metal wire brush attached to a drill and see how it goes.
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12-05-2019, 01:57 PM | #8 |
Scooby Guru
Member#: 120
Join Date: Jul 1999
Chapter/Region:
AKIC
Location: Where the Navy sends me...
Vehicle:1997 Legacy 2.5GT 1996 Impreza coupe |
A wire wheel might be too abrasive, but I dunno.
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12-09-2019, 09:11 PM | #9 |
Scooby Newbie
Member#: 372679
Join Date: Nov 2013
Chapter/Region:
TXIC
Location: DFW,(75023) TX
Vehicle:2012 impreza DGM/plylon orange stains |
wrong pads and pad material. over worked the brakes.
https://www.meyle.com/fileadmin/user...12S_en_web.pdf also make sure you don't have anything stuff between pad and rotor. |
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