Have you seen a rotor like this ?
Thread Starter
Member
Joined: June 14, 2012
Posts: 32
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From: France
Have you ever seen a rotor like this ?
Hi,
I was changing the front pads of my 2011 GT (32000km) and i have discovered this on the right front rotor :
A manufacturing defect ?
The brake fluid was changed for a DOT 5.1 in april before a track day.
And i remember that this rotor was smoking after a session in the afternoon for some minutes. But the car has kept the same braking performance all the day.
Serge.
I was changing the front pads of my 2011 GT (32000km) and i have discovered this on the right front rotor :
A manufacturing defect ?
The brake fluid was changed for a DOT 5.1 in april before a track day.
And i remember that this rotor was smoking after a session in the afternoon for some minutes. But the car has kept the same braking performance all the day.
Serge.
Last edited by Serge87; Jul 11, 2013 at 03:32 AM.
Shelby GT350 Member
Joined: May 6, 2012
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From: Crofton MD
Did you just change fluid and not pads? I had something similar happen to my rear brakes on one side because some grease got on the rotor after the pad change. Also change from 5.1 to DOT 4, something like Motul 660 or Stoptech 600.
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Shelby GT350 Member
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From: Crofton MD
Have not heard good things about their rotors without their pads. And if you did pads I would suggest HP+ unless you care about squeal. Also no real need to get anything beyond stock rotors unless your really competing.
Last edited by Brandon302; Jul 13, 2013 at 11:41 AM.
Bear Eats King...
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Bear ****s Bone
Joined: September 5, 2011
Posts: 5,473
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From: Cleburne, Tx
Hi,
I was changing the front pads of my 2011 GT (32000km) and i have discovered this on the right front rotor :
A manufacturing defect ?
The brake fluid was changed for a DOT 5.1 in april before a track day.
And i remember that this rotor was smoking after a session in the afternoon for some minutes. But the car has kept the same braking performance all the day.
Serge.
I was changing the front pads of my 2011 GT (32000km) and i have discovered this on the right front rotor :
A manufacturing defect ?
The brake fluid was changed for a DOT 5.1 in april before a track day.
And i remember that this rotor was smoking after a session in the afternoon for some minutes. But the car has kept the same braking performance all the day.
Serge.
Thread Starter
Member
Joined: June 14, 2012
Posts: 32
Likes: 0
From: France
It was impossible to find their yellow pads for the non-brembo calipers. 
I use my car daily. So i don't want squealing pads.
I will only do 2 to 4 trackdays in a year.
And if you did pads I would suggest HP+ unless you care about squeal. Also no real need to get anything beyond stock rotors unless your really competing.
I will only do 2 to 4 trackdays in a year.
Shelby GT350 Member
Joined: May 6, 2012
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From: Crofton MD
Thread Starter
Member
Joined: June 14, 2012
Posts: 32
Likes: 0
From: France
This afternoon, disassembly of the 2 front rotors.
Same rotor after using sand paper and a dremel finish with a metal brush :
No more brown tracks, but the rotor is not slick where the brown parts were.
I think it was some rust. It was so hard, it did 2 steps in the pads.
Left rotor was showing the same problem :
Same rotor after using sand paper and a dremel finish with a metal brush :
No more brown tracks, but the rotor is not slick where the brown parts were.
I think it was some rust. It was so hard, it did 2 steps in the pads.
Left rotor was showing the same problem :
Bear Eats King...
Bear ****s Bone
Bear ****s Bone
Joined: September 5, 2011
Posts: 5,473
Likes: 2
From: Cleburne, Tx
This afternoon, disassembly of the 2 front rotors.
Same rotor after using sand paper and a dremel finish with a metal brush :
No more brown tracks, but the rotor is not slick where the brown parts were.
I think it was some rust. It was so hard, it did 2 steps in the pads.
Left rotor was showing the same problem :
Same rotor after using sand paper and a dremel finish with a metal brush :
No more brown tracks, but the rotor is not slick where the brown parts were.
I think it was some rust. It was so hard, it did 2 steps in the pads.
Left rotor was showing the same problem :
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Bear Eats King...
Bear ****s Bone
Bear ****s Bone
Joined: September 5, 2011
Posts: 5,473
Likes: 2
From: Cleburne, Tx
All the cars me and my coworkers have seen that look like this have come from either the cost or up north. Salt water doing it.Don't know exactly why they rust that way. We had an explorer come in today with all 4 like that. Lady told us she bought it in Canada.
Bullitt Member
Joined: June 15, 2008
Posts: 448
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From: NY
The sliders are stuck. Move the slider boots and clean them with wd40. Let them dry and pack them with synthetic grease, make sure they are not bent or stuck. This is the reason I hate sliding calipers. They can start dragging and then ruin a set of rotors and pads.
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From: In Boredom
This afternoon, disassembly of the 2 front rotors.
Same rotor after using sand paper and a dremel finish with a metal brush :
No more brown tracks, but the rotor is not slick where the brown parts were.
I think it was some rust. It was so hard, it did 2 steps in the pads.
Left rotor was showing the same problem :
Same rotor after using sand paper and a dremel finish with a metal brush :
No more brown tracks, but the rotor is not slick where the brown parts were.
I think it was some rust. It was so hard, it did 2 steps in the pads.
Left rotor was showing the same problem :