Rotor Scoring

celluloidheros · 11-05-2012, 05:33 PM

I put new rotors and pads on about six months ago. I noticed my front left rotor has some scoring on the outer edge, the other 3 rotors are fine, any ideas as to what is causing this issue ? I appreciate the help. Thanks, Don C.

Zell · 11-05-2012, 05:41 PM

It looks to me like something metal is seriously gouging the rotor. Take it all apart and see what you find.

sammk · 11-05-2012, 09:09 PM

Did you remember to clean and lubricate the caliper guide pins..? If the calipers aren't floating freely the pads may be biting into the rotor.

celluloidheros · 11-06-2012, 10:47 AM

what's the best thinbg to use for lubrication of the guide pins, i know there are restrictions as to the type of lubrication. I have silver neverseize, and superlube. I would think i need high temp specialized brake lubricant.

11-05-2012, 05:33 PM	#1
celluloidheros Registered User Join Date: Oct 2007 Location: rochester ny Posts: 140 My Ride: 2001 330 xi View My Garage	Rotor Scoring I put new rotors and pads on about six months ago. I noticed my front left rotor has some scoring on the outer edge, the other 3 rotors are fine, any ideas as to what is causing this issue ? I appreciate the help. Thanks, Don C. Attached Thumbnails

11-05-2012, 05:41 PM	#2
Zell Wears carbon fiber boxers Join Date: Jun 2009 Location: In a van down by the river Posts: 3,682 My Ride: 330Ci ZHP 6sp View My Garage	It looks to me like something metal is seriously gouging the rotor. Take it all apart and see what you find. __________________ E46Fanatic's resident mathemagician

11-05-2012, 09:09 PM	#3
sammk Registered User Join Date: Jan 2008 Location: Michigan Posts: 378 My Ride: Bone-stock E92 View My Garage	Did you remember to clean and lubricate the caliper guide pins..? If the calipers aren't floating freely the pads may be biting into the rotor. __________________ E92 convert. BMW Fanatic. Last edited by sammk; 11-05-2012 at 09:10 PM.

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11-06-2012, 10:47 AM	#4
celluloidheros Registered User Join Date: Oct 2007 Location: rochester ny Posts: 140 My Ride: 2001 330 xi View My Garage	what's the best thinbg to use for lubrication of the guide pins, i know there are restrictions as to the type of lubrication. I have silver neverseize, and superlube. I would think i need high temp specialized brake lubricant.