Brake Rotor Groove?

chino_487 · 04-29-2012, 08:16 PM

Recently did a Brembo upgrade to my 2009 WRX about 2 months ago. While driving I looked over the driver side window and noticed through the reflection from the car next to me that there a dark circle on my rotor. When I got home I saw that there is a circular groove on the rotor which seems like a scratch on the surface. This is absent on the passenger side. Is this normal? any ideas on what is causing this?

The pictures dont do it justice but they are deeper than they seem.

* Registered users of the site do not see these ads.

subergoo · 04-29-2012, 08:52 PM

how deep are you talkin here? just high grit sand paper rough or can you snag a finger nail on it?
have you inspected the pad?

chino_487 · 04-29-2012, 10:45 PM

Quote:

Originally Posted by subergoo

how deep are you talkin here? just high grit sand paper rough or can you snag a finger nail on it?
have you inspected the pad?

I didnt touch as I had just driven the car but you can actually see the grooves (scratch-like, if you must) if you look closely.

I'll have to inspect the pad soon.

EdHilario · 04-30-2012, 01:48 AM

Could just be a pebble stuck in between the pad and rotor.
Do you notice a squeal?

chino_487 · 04-30-2012, 04:33 AM

Quote:

Originally Posted by EdHilario

Could just be a pebble stuck in between the pad and rotor.
Do you notice a squeal?

Yeah. I do at low speed braking (maybe <10 mph).

My question is: will the rotor be ok?

SW21MR2 · 04-30-2012, 01:40 PM

Your rotor will probably be fine. Just find out what's causing the grove and remove it.

aberg12012 · 04-30-2012, 07:17 PM

Totally normal.

If it bothers you get slotted or drilled rotors to keep the pads cut clean. Or take the wheels and caliper's off and clean them manually all the time.

EdHilario · 04-30-2012, 11:38 PM

The rotors will be happier the sooner you fix the problem. They will be fine. If you're super anal get the fronts turned or replaced if you have the money. Good luck.

04-29-2012, 08:16 PM	#1
chino_487 Scooby Specialist Member#: 209156 Join Date: Apr 2009 Chapter/Region: SCIC Location: West Los Angeles, CA Vehicle: 2009 WRX Sedan SSM	Brake Rotor Groove? Recently did a Brembo upgrade to my 2009 WRX about 2 months ago. While driving I looked over the driver side window and noticed through the reflection from the car next to me that there a dark circle on my rotor. When I got home I saw that there is a circular groove on the rotor which seems like a scratch on the surface. This is absent on the passenger side. Is this normal? any ideas on what is causing this? The pictures dont do it justice but they are deeper than they seem. * Registered users of the site do not see these ads.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
FS : Brake rotors, Brake rotors, Brake Rotors! 04 STi	generalee69	NWIC Private Classifieds	16	05-11-2012 02:45 PM
Loose front brake rotor. Is the bearing shot?	I3E4VEI2	Brakes, Steering & Suspension	13	05-01-2012 11:20 AM
EBC Sport Grooved Brake Rotors	D-Speed 2.5	Brakes, Steering & Suspension	2	07-21-2004 03:05 PM
front brake rotors unusual wear/ grooves	new_wrx_owner	Warranty Issues & SOA Problems	1	10-20-2002 07:08 PM
Grooved brake rotors (stock)	pitansk	Brakes, Steering & Suspension	21	04-07-2002 11:09 AM

04-29-2012, 08:52 PM	#2
subergoo Scooby Newbie Member#: 141237 Join Date: Feb 2007 Chapter/Region: MWSOC Location: wichita kansas Vehicle: 2003 Impreza WRX cant we all get along?	how deep are you talkin here? just high grit sand paper rough or can you snag a finger nail on it? have you inspected the pad?

04-30-2012, 01:48 AM	#4
EdHilario Scooby Specialist Member#: 137398 Join Date: Jan 2007 Chapter/Region: E. Canada Location: Toronto Vehicle: 2004 Impreza 2.5RS Platinum Silver Metallic	Could just be a pebble stuck in between the pad and rotor. Do you notice a squeal?

04-30-2012, 01:40 PM	#6
SW21MR2 Scooby Specialist Member#: 60135 Join Date: Apr 2004 Chapter/Region: SCIC Location: California Vehicle: 2011 WRX WR Blue	Your rotor will probably be fine. Just find out what's causing the grove and remove it.

04-30-2012, 07:17 PM	#7
aberg12012 Scooby Newbie Member#: 127614 Join Date: Sep 2006 Chapter/Region: MWSOC Location: Neenah, WI Vehicle: 2008 WRX Obsidian Black	Totally normal. If it bothers you get slotted or drilled rotors to keep the pads cut clean. Or take the wheels and caliper's off and clean them manually all the time.

04-30-2012, 11:38 PM	#8
EdHilario Scooby Specialist Member#: 137398 Join Date: Jan 2007 Chapter/Region: E. Canada Location: Toronto Vehicle: 2004 Impreza 2.5RS Platinum Silver Metallic	The rotors will be happier the sooner you fix the problem. They will be fine. If you're super anal get the fronts turned or replaced if you have the money. Good luck.