• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Grooved Rotors Make me sad face :(

  • Thread starter Thread starter AmBo
  • Start date Start date Dec 17, 2006

AmBo

Active Member
Feb 3, 2004
1,027
1
36
New Jersey
Dec 17, 2006
#1
  • Dec 17, 2006
  • #1
Check it out. Think the caliper or the pad is to blame? What should I do about it? I was planning on getting new rotors in the spring but F that if they are just going to get tore up by the caliper.


Sorry about the quality. Was taken with my camera phone @ only 2MP.

View attachment 416629

View attachment 416631
 
S

san~man

O-G
Founding Member
Nov 29, 1999
8,546
3
78
A little grass shack on a big lava rock
Dec 17, 2006
#2
  • Dec 17, 2006
  • #2
Was there something stuck between the caliper and the rotor? Looks it...the rotor shouldn't wear like that.
 

ZIncGTSTANG

New Member
Jun 28, 2005
34
0
0
Dec 17, 2006
#3
  • Dec 17, 2006
  • #3
Ouch that sucks. I agree with sanman that something might be between the pad and the rotor. You could take the caliper off and look at the pad surface. You could also maybe get the rotor resurfaced.
 

AmBo

Active Member
Feb 3, 2004
1,027
1
36
New Jersey
Dec 17, 2006
#4
  • Dec 17, 2006
  • #4
Nothing was stuck there to my knowledge. I haven't taken the caliper off yet. Is this dangerous to drive on?
 
N

NismoSER

New Member
Aug 21, 2006
5
0
0
Jackson, NJ
Dec 17, 2006
#5
  • Dec 17, 2006
  • #5
Dangerous? No, its not dangerous. But the only "remedy" is to resurface the front rotors (looks like your Cobra calipers that I put on, so I assume front) and replace the pads with new.

If its time for new pads, then obviously that's a good time to resurface the rotors. Otherwise, you'd probably be ok riding it out until new pads are needed.
 

ZIncGTSTANG

New Member
Jun 28, 2005
34
0
0
Dec 17, 2006
#6
  • Dec 17, 2006
  • #6
Paint the center of the rotors silver if you take them off.
 

AmBo

Active Member
Feb 3, 2004
1,027
1
36
New Jersey
Dec 17, 2006
#7
  • Dec 17, 2006
  • #7
I'll be getting completely new rotors in the spring so no need to resurface or paint. I need one's where the center is painted as rust is ugly.

As for the pads, I may as well just slap new pads on at the same time. Thanks for the replys guys
 
0

007

Founding Member
Jan 29, 2002
3,287
24
69
Broke
Dec 17, 2006
#8
  • Dec 17, 2006
  • #8
I got 2 cobra slotted drilled zinc plated rotors for $100 shipped. Rotorpros.com
 

AmBo

Active Member
Feb 3, 2004
1,027
1
36
New Jersey
Dec 17, 2006
#9
  • Dec 17, 2006
  • #9
007 said:
I got 2 cobra slotted drilled zinc plated rotors for $100 shipped. Rotorpros.com
Click to expand...

How's the quality of the rotor?
 
S

san~man

O-G
Founding Member
Nov 29, 1999
8,546
3
78
A little grass shack on a big lava rock
Dec 17, 2006
#10
  • Dec 17, 2006
  • #10
I got the Brembo's from Tirerack. They were pricey, but worth it IMO.

Just beware of the "Brembo's" off eBay. The majority of them are slotted/drilled/or both by an aftermarket company using a plain blank. I can't say for sure that the AM company's techniques are better or worse than Brembo's, but I went with the "genuine" drilled rotor just for peace of minds sake.
 
0

007

Founding Member
Jan 29, 2002
3,287
24
69
Broke
Dec 17, 2006
#11
  • Dec 17, 2006
  • #11
AmBo said:
How's the quality of the rotor?
Click to expand...

Wont be using them till my car goes back on the road in the spring. They look sweet tho.




 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,248
17,929
224
Massachusetts
Dec 17, 2006
#12
  • Dec 17, 2006
  • #12
Take the caliper out and have a look. A peice of road debris or something could have lodged into the caliper and caused that groove. If you remove it, you could just put the caliper back on and continue driving and the groove will slowly disappear over time as the rotor and pads wear (or until you replace them)
 
T

thomas91169

I'd donkey punch my sister.
Aug 19, 2005
0
0
0
Modesto, CA
Dec 17, 2006
#13
  • Dec 17, 2006
  • #13
san~man said:
I got the Brembo's from Tirerack. They were pricey, but worth it IMO.

Just beware of the "Brembo's" off eBay. The majority of them are slotted/drilled/or both by an aftermarket company using a plain blank. I can't say for sure that the AM company's techniques are better or worse than Brembo's, but I went with the "genuine" drilled rotor just for peace of minds sake.
Click to expand...

seconded.

i had a set of the ebay cross drilled and slotted on my 94 tbird. While browsing another site, i viewed where a guy had a set of the same ones on his eclipse, and while doing 75 one cracked and took out his whole drivers side suspension and rim went bye bye and he flipped the car a good 3 or 4 times into a cornfield. i drove right down to autozone and picked up a set of normal rotors, and installed them. low and behold, the cross drilled/slotted ones i had were showing signs of cracking.

i think it has to do with the fact the brembo/real ones are forged with the holes and/or slots in them, and the aftermarkets are just drilled and slotted afterwards, which lowers the integrity of the rotor.
 

triggz

Founding Member
May 15, 2002
1,218
0
37
Gadsden, AL
Dec 17, 2006
#14
  • Dec 17, 2006
  • #14
Thats not bad and its nothing to worry about. I had a groove much much deeper in mine before I went to 13" equipment. Its usually caused by a tiny rock or something getting stuck between the pad and rotor.

Its not dangerous at all, and technically grooves in the rotors will help you. Concentric grooves add extra surface area for the pad to sit in and contact for braking but it can sometimes put strange feedback through the pedal.

Anyway, as far as repair, get new pads and have the rotor turned at the same time if you're that worried about it. If the groove is not getting any worse then whatever debris it was is gone, if it does continue to grow you can take the pad out and scuff off any debris.
 
You must log in or register to reply here.

Similar threads

M
Progress Thread mnky99 2001 V6 evap core, ac compressor, heater core replacement
  • mnky99
  • Sep 5, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
487
1996 - 2004 SN95 Mustang -General/Talk- Sep 5, 2025
mnky99
M
5
What's it Worth? 1990 Notchback 5.0
  • 50notch90
  • Apr 14, 2024
  • What is it Worth?!?!?
Replies
4
Views
2K
What is it Worth?!?!? Apr 23, 2024
50notch90
5
E
Finished my Fox Hydroboost Install - Tips
  • Engineer Duane
  • Apr 9, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
4
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 5, 2025
Engineer Duane
E
J
Progress Thread Family member 1989 GT- Backstory and updates
  • JRC99
  • Apr 19, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
15
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 26, 2025
JRC99
J
M
Gt convertible brake problems.
  • MacMAgoo
  • Oct 2, 2022
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
12
Views
3K
1996 - 2004 SN95 Mustang -General/Talk- Oct 15, 2022
CAMTWO1070
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?