[AndrewC1989]

I noticed this on my car the other day. Anyone else have this happen to them? It looks like maybe a pebble got caught in between the pad and rotor? Will i have to replace it?

[oldmanstyle]

I would inspect the pads/remove foreign object, and continue to monitor. No need to replace imo. If you track the car it will probably have reduced life since the line goes through a couple of the cross-drilled holes.

[vm]

It doesn't look that deep so I'll doubt that you'll have any problems. Check pads condition though.

[M+M]

Should have heard a pretty loud screeching when something was gauging the rotor. Funny that you hadn't noticed. Rotor should be fine.

[AndrewC1989]

Originally Posted by M+M

Should have heard a pretty loud screeching when something was gauging the rotor. Funny that you hadn't noticed. Rotor should be fine.

i did hear noises lol. i just heard them from what i thought was the drivers side and went to check and didn't see anything so i thought nothing of it since the noise stopped after a min. figured it was a rock in the dust shield. saw the other side a week later and noticed the scrape. glad it isn't serious.

[AndrewC1989]

Replaced the rotor 3 weeks ago. Just happened again. Same spot. No noises this time. Could it be the pad or the caliper?

[M2Nebula]

Possibly a bent anti-squeal/wear plate tab if they exist on the M2 calipers?

[Voomar]

I noticed your calipers are black (vs blue) so perhaps you had them painted? I'm thinking the person that painted the caliper my not have installed the pad clips correctly. Either that or you pad is damaged in some way since the disc gouge on the new disc seems to be in the same spot as the original.

Given the price of a new rotor, I'd go back to the person who installed the new rotor and ask why they did not check the caliper and pads more thoroughly...it's a pretty basic thing to look for root cause of the original damage.

[AndrewC1989]

Originally Posted by Voomar

I noticed your calipers are black (vs blue) so perhaps you had them painted? I'm thinking the person that painted the caliper my not have installed the pad clips correctly. Either that or you pad is damaged in some way since the disc gouge on the new disc seems to be in the same spot as the original.

The first time it occurred was before the calipers were painted. Second time was after, so i'm ruling that out. Yes it seems the pad might be damaged since it's gouging the rotor in the same spot. That's my guess. Either that or i'm extremely unlucky and got a rock in the exact same spot. Doubt it though.

Originally Posted by Voomar

Given the price of a new rotor, I'd go back to the person who installed the new rotor and ask why they did not check the caliper and pads more thoroughly...it's a pretty basic thing to look for root cause of the original damage.

Agreed.

[chris719]

I would never replace the rotor and leave an old pad

[chmura]

Originally Posted by chris719

I would never replace the rotor and leave an old pad

Same here. Always change them together even if pads have plenty of meat on them. New pads and new rotors have to properly seat together.

[ZPrime]

Originally Posted by chmura

Same here. Always change them together even if pads have plenty of meat on them. New pads and new rotors have to properly seat together.

Old pads will bed into a new rotor just fine, it may take slightly longer since most new pads have a special "bedding in layer" near the top... but it won't hurt anything. It can affect the service life of the rotor, but shouldn't change it much (maybe a few thousand miles).

The bigger thing is that you don't want to change between two different sets of pads on the same rotor, unless those pads were designed to work with each other (typically within the same brand of pads, track & street pads are occasionally swappable without changing rotors).