Deep "scoring" in rotor???

[cocoadog]

What would cause a 1/64 (d) x 1/8"(w) score in my front rotor? That's a rough est, I can definitely feel it with my fingernail. The pads are all but new, I have a good 3/8" left on them. I just noticed it this morning. I'm running stock rotors and mild Hawk pads. Any ideas?

[stowaway]

which hawk pads? where on the rotor face is this score?

[cocoadog]

They are Hawk "HP Plus" pads and see photos below for visual description.

[stowaway]

the HP+ pads are fairly aggressive, especially when cold. That looks like something got stuck between the pad and the rotor. Is the pad surface perfectly smooth?

[cocoadog]

Yea that was my assumption as well. Just was not sure if that was possible. I will have to check the pads later this week.

[BLKDOUTSRT4]

pads have a split down the middle right....prob got a rock in the split ...imagine the luck