Why does my brake disc look like this?

[Cobra700]

Just noticed my brake disc was like this on both sides. Any clue? DBA 4000 rotors and Pagid RS29 pads......

Overheat?

 

[blacksheep-1]

Those are definitely hot spots, causes...?? maybe the pads are dragging, wheel bearing getting loose, did you replace and lube all of the caliper hardware when you installed them? That was a constant maintenance area for us.

 

[Cobra700]

Ugh....
Doesn't seem like pads are dragging.
New pads and rotors in September and haven't made a trackday since. Been my DD.
Both sides look exactly the same.
Guess I'll have to take them off to clean and lube everything and check wheel bearings. Are the rotors toast? Can I turn them?
Maybe I'm the guy that needs ducts for the street?

 

[TMSBOSS]

Did you bed in the pads IAW Pagid instructions?

I have seen the same build up if not properly bed in.

I fixed this by removing the rotors and sanding with a DA and course sand paper then bending.

Pagids are a great pad but demand a proper bed in.

 

[2012-Boss]

I get areas like that on my rotors with the Pagids all the time, especially until after a few sessions to get them bedded in. I wouldn't worry about it unless you are getting a shudder or pulsation in the brake pedal.

 

[Mad Hatter]

+ Same here. Also might want to block your brake ducts if you have them, when your bedding your pads that is.

 

[blacksheep-1]

we over maintain our brakes and EVERY time we touch them, we go over the hardware thoroughly and clean and lube it, sometimes as many as 5 times per weekend.
We head off a ton of problems that way.
Now that I think about it (because things like this keep me up at night) that could quite possibly be a bed-in issue, so follow the instructions to the letter they are not all the same procedure.

 

[F.D. Sako]

Edit: wrong thread/post.

 

[F.D. Sako]

Haha looks like I had a brain fart and posted this in the wrong thread! :-[ I'll remove the post to avoid confusion lol.
Tracy, I meant towing the boss.
I moved the question to this thread.

 

[Cobra700]

Thanks guys!
Yes I followed the bed in instructions. No ducts yet.
Gonna clean them, relube hardware and rebed. Hopefully that helps.
No shake or shudder.