Unusual Carbon Rotor Wear - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Z288racer · 09-07-2016, 01:01 PM

I have changed front Rotor pads once and everything seemed normal. I just changed them for the second time (and first time for the rear) and I noted an unusual indentation into the front rotors. It looks like the pads put in a bead into the rotor. (See pictures). This happened on both sides of the rotor and on both front rotors. The result is that the cross section of the rotor where these indentations are is below the minimum thickness of the rotor. Anyone seen anything like this? What is the cause? Is this safe to race??? PS I only wore down the pads to around 5mm.

D2M · 09-07-2016, 05:49 PM

Mine original set was doing the same thing. I'm on my 2nd set of OEM front and rear pads now. Have the rotors weighed and see if they are above minimum weight. Curious..

Z288racer · 09-08-2016, 10:15 PM

Quote:

Originally Posted by D2M

Mine original set was doing the same thing. I'm on my 2nd set of OEM front and rear pads now. Have the rotors weighed and see if they are above minimum weight. Curious..

did you keep racing on them despite this "grooving"?

D2M · 09-08-2016, 11:05 PM

Yes. Mine don't look as bad as yours do. Weigh them, looks like they are falling apart so therefore the resin has evaporated. You weigh them as a complete rotor assembly no need to disassemble.

Og Neon · 09-08-2016, 11:07 PM

Are you referring to the ring near the hub of the rotor? Also can we get a photo further back? I can't tell what is from the flash and what isn't. Lastly, are you sure they were the right pads? I am not sure if our calipers only fit one type of pad or not.

z28monster · 09-09-2016, 10:47 AM

Just take it to the dealer and let them take care of it as it's still under warranty.

shadowhunter66 · 09-09-2016, 03:24 PM

I would be interested in seeing others post what their rotors look like as reference.

Mgizzle · 09-09-2016, 11:22 PM

Are these oem pads u bought or aftermarket? Zr1 vette pads?

s.hammer · 09-18-2016, 09:48 PM

I have the same groove, nothing touching the rotor at that spot so I believe it to be normal, think there is just more thickness to the braking surface area of the front rotors.

aris · 09-20-2016, 11:50 AM

Quote:

Originally Posted by z28monster

Just take it to the dealer and let them take care of it as it's still under warranty.

Brake rotors are generally considered a "wear and tear" item. Most warranties wont cover replacement rotors unless there is some kind of defect.

Z288racer · 09-22-2016, 02:03 PM

I have taken it to the dealer, but the service guy didn't really wanted to deal with it. Suggested to talk to the service manager. I plan to go there today. The pads I bought were p/n specific for the Z28. The original pads did not act in the same manner. The problem with this wear is that it's eating at the "root" of the rotor, so now it's way bellow minimum thickness and I will not race them with this type of wear. Will update after my discussion with the service manager. I believe it's a warranty claim.

z28monster · 09-22-2016, 09:32 PM

Quote:

Originally Posted by aris

Brake rotors are generally considered a "wear and tear" item. Most warranties wont cover replacement rotors unless there is some kind of defect.

I understand, but this particular situation looks like a mfr defect and not a typical characteristic of Carbon Ceramic brake wear, which are almost bullet proof - unless he's tracked the heck out of it.

Og Neon · 09-23-2016, 12:12 AM

I have that same inner ring on mine, and I am still on the original pads and have 6k miles on the car with several track and autocross days. I think that ring is normal.

chip4 · 09-23-2016, 03:23 AM

Looks like you have worn those pads down to the rivets -not sure if they will warranty this "unusual" rotor wear for you.

09-07-2016, 01:01 PM	#1
Z288racer Drives: 2015 Camaro Z28 Join Date: Aug 2015 Location: Los Angeles Posts: 15	Unusual Carbon Rotor Wear I have changed front Rotor pads once and everything seemed normal. I just changed them for the second time (and first time for the rear) and I noted an unusual indentation into the front rotors. It looks like the pads put in a bead into the rotor. (See pictures). This happened on both sides of the rotor and on both front rotors. The result is that the cross section of the rotor where these indentations are is below the minimum thickness of the rotor. Anyone seen anything like this? What is the cause? Is this safe to race??? PS I only wore down the pads to around 5mm. Attached Images

09-09-2016, 11:22 PM	#8
Mgizzle Drives: 2013 Camaro 1LE 1SS Join Date: Aug 2012 Location: Detroit Posts: 1,252	Are these oem pads u bought or aftermarket? Zr1 vette pads? __________________ I work for General Motors and am not an official spokes person for General Motors. My views and opinions are my own and not those of General Motors.

09-07-2016, 05:49 PM	#2
D2M Drives: Z/28 Join Date: Oct 2015 Location: NJ Posts: 538	Mine original set was doing the same thing. I'm on my 2nd set of OEM front and rear pads now. Have the rotors weighed and see if they are above minimum weight. Curious..

09-08-2016, 11:05 PM	#4
D2M Drives: Z/28 Join Date: Oct 2015 Location: NJ Posts: 538	Yes. Mine don't look as bad as yours do. Weigh them, looks like they are falling apart so therefore the resin has evaporated. You weigh them as a complete rotor assembly no need to disassemble.

09-08-2016, 11:07 PM	#5
Og Neon Lover of Speed Drives: 2018 ZLE Join Date: Feb 2016 Location: Phoenix Posts: 274	Are you referring to the ring near the hub of the rotor? Also can we get a photo further back? I can't tell what is from the flash and what isn't. Lastly, are you sure they were the right pads? I am not sure if our calipers only fit one type of pad or not.

09-09-2016, 10:47 AM	#6
z28monster Drives: 15 Z28, 17 GT350R Join Date: Nov 2015 Location: Frisco, TX Posts: 212	Just take it to the dealer and let them take care of it as it's still under warranty.

09-09-2016, 03:24 PM	#7
shadowhunter66 Drives: 2017 Buick Enclave Join Date: Jul 2016 Location: Los Angeles, CA Posts: 33	I would be interested in seeing others post what their rotors look like as reference.

09-18-2016, 09:48 PM	#9
s.hammer Drives: 2015 Z/28 Join Date: Jun 2011 Location: Rhode Island Posts: 246	I have the same groove, nothing touching the rotor at that spot so I believe it to be normal, think there is just more thickness to the braking surface area of the front rotors.

09-22-2016, 02:03 PM	#11
Z288racer Drives: 2015 Camaro Z28 Join Date: Aug 2015 Location: Los Angeles Posts: 15	I have taken it to the dealer, but the service guy didn't really wanted to deal with it. Suggested to talk to the service manager. I plan to go there today. The pads I bought were p/n specific for the Z28. The original pads did not act in the same manner. The problem with this wear is that it's eating at the "root" of the rotor, so now it's way bellow minimum thickness and I will not race them with this type of wear. Will update after my discussion with the service manager. I believe it's a warranty claim.

09-23-2016, 12:12 AM	#13
Og Neon Lover of Speed Drives: 2018 ZLE Join Date: Feb 2016 Location: Phoenix Posts: 274	I have that same inner ring on mine, and I am still on the original pads and have 6k miles on the car with several track and autocross days. I think that ring is normal.

09-23-2016, 03:23 AM	#14
chip4 Drives: 2015 Z/28 Silver #713 Join Date: Feb 2016 Location: Gilbert AZ Posts: 153	Looks like you have worn those pads down to the rivets -not sure if they will warranty this "unusual" rotor wear for you.