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How do you know when your rotors are done?

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Old Aug 6, 2002 | 12:40 PM
  #1  
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Default How do you know when your rotors are done?

After CMP this past weekend my rotors are <u>extremely</U> grooved. This is my first event with Carbotech XP pads. Pretty much nothing but pretty deep grooves over the whole pad contact area. I have never seen this so Im assuming that the rotors are done and I should get new ones before FATT next week. Am I correct here or is this normal behavior for track pads and hard braking?
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Old Aug 6, 2002 | 12:44 PM
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Default Re: How do you know when your rotors are done? (elgorey)

Its time for new rotors when they crack... Or shutter really bad..
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Old Aug 6, 2002 | 12:45 PM
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Default Re: How do you know when your rotors are done? (elgorey)

Measure them and compare that measurement to the minimum thickness (stamped or cast in the back of the rotor somewhere).
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Old Aug 6, 2002 | 12:47 PM
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Default Re: How do you know when your rotors are done? (elgorey)

Rotors and pads are disposable. If they're cut deep, replace 'em.
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Old Aug 6, 2002 | 01:01 PM
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From: formerly elgorey, VIRginia
Default Re: How do you know when your rotors are done? (Honda318dx)

Its time for new rotors when they crack... Or shutter really bad..
They dont shudder and only have a few tiny hair cracks
So you are saying they should be ok even with the grooves?

They only have 14,000 street miles and 3 HPDE weekends on them
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Old Aug 6, 2002 | 01:38 PM
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Default Re: How do you know when your rotors are done? (elgorey)

Miles and # of events don't matter
I've got 37000 miles on my truck God knows how many track events or miles but I've been through. But I've gone through 6 rotors and 12 sets of pads
REPLACE THEM
Ive been going through A set of pads and a rotor every weekend
That's why the trucks been at home almost every weekend
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Old Aug 6, 2002 | 02:04 PM
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Default Re: How do you know when your rotors are done? (elgorey)

I throw out my rotors after two race weekends.
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Old Aug 6, 2002 | 05:22 PM
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Default Re: How do you know when your rotors are done? (johng)

What he said.
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Old Aug 6, 2002 | 09:59 PM
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Default Re: How do you know when your rotors are done? (typealex2)

put 'em in the can...

Evan, i can give you a hand if you want to do rotorz and brake lines sunday evening....
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Old Aug 7, 2002 | 07:11 AM
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Default Re: How do you know when your rotors are done? (-RJ)

Rotors are done when they are smaller than the specifiied limit
or when black sports appear on the rotor
or there are cracks
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Old Aug 7, 2002 | 07:22 AM
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Default Re: How do you know when your rotors are done? (elgorey)

when they look like this...
https://honda-tech.com/zerothread?id=181691

toss em.

FYI... no warping or thinness was observed with the set pictured.
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Old Aug 7, 2002 | 08:01 AM
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Default Re: How do you know when your rotors are done? (Willard)

*sigh* $25 each.......it must be nice to have aftermarket support
I have to pay $100 each and wait over a week to get my replacements.....
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Old Aug 7, 2002 | 08:20 AM
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Default Re: How do you know when your rotors are done? (elgorey)

ouch... that hurts.
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Old Aug 7, 2002 | 08:31 AM
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Default Re: How do you know when your rotors are done? (-RJ)

put 'em in the can...

Evan, i can give you a hand if you want to do rotorz and brake lines sunday evening....
I'm in! I'm always up for learning something.
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Old Aug 7, 2002 | 08:55 AM
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Default Re: How do you know when your rotors are done? (elgorey)

The WRX2200 in your sig... that's BS right like the inline-6 S2000 story? What the hell is going on?
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Old Aug 7, 2002 | 09:47 AM
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Default Re: How do you know when your rotors are done? (elgorey)

When they look like this...

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Old Aug 7, 2002 | 11:38 AM
  #17  
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Default Re: How do you know when your rotors are done? (-RJ)

put 'em in the can...

Evan, i can give you a hand if you want to do rotorz and brake lines sunday evening....
and don't forget those ducts
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Old Aug 7, 2002 | 12:00 PM
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Default Re: How do you know when your rotors are done? (smokin rubber)

Corey my grooves are very similar to the grooves in that pic (no crack of course)

Would the grooves alone be reason to replace those rotors?

Evan


[Modified by elgorey, 4:00 PM 8/7/2002]
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Old Aug 7, 2002 | 08:42 PM
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Default Re: How do you know when your rotors are done? (elgorey)

dammit boy.

Maybe i can get j00 a deal on some OE rotors from my dad. Dont buy that aftermarket slotted crap. Soon as you get those brake lines in we'll do some wrenching and drinking

RJ
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Old Aug 7, 2002 | 09:26 PM
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Default Re: How do you know when your rotors are done? (Honda318dx)

Are those grooves, or is that pad buildup on the rotors?
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Old Aug 7, 2002 | 09:27 PM
  #21  
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Default Re: How do you know when your rotors are done? (Floyd)

They way the light is reflecting off them differently at the "lines" leads me to believe that they're grooves.
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Old Aug 8, 2002 | 05:58 AM
  #22  
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Default Re: How do you know when your rotors are done? (JMU1337)

They're grooves. Mine groove slightly w/ Hawk Blues, but not that badly.

Warren
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Old Aug 8, 2002 | 06:44 AM
  #23  
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Default Re: How do you know when your rotors are done? (Warren)

well new rotors last about 1 weekend on my car with Hawk blues. I have them turned and get another weekend, but 2 weekends is the limit.

the integra has margional brakes at best, when compared to something like a Porsche 944. This means they work harder to stop the car and hence groove easily. I get half a season from the 944 rotors.

My advise is check them after every session. along with everything else.

King RAT.
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Old Aug 8, 2002 | 01:53 PM
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Default Re: How do you know when your rotors are done? (-RJ)

dammit boy.

Maybe i can get j00 a deal on some OE rotors from my dad. Dont buy that aftermarket slotted crap. Soon as you get those brake lines in we'll do some wrenching and drinking
OE WRX rotors blow. Soft as hell and dont vent very well. Unfortunately I cant get nice cheap Brembo blanks for my car. The best alternative for stock braking system is DBA rotors which vent very well and have a nice hard structure meant to be used with agressive pads. They are also about the same price ($100/ea) as OE rotors. unfortunately they dont come in blank, best I can do is slotted. Still better than the OE crap, and for the same $$

Evan
Why I want to get a nice Stoptech kit
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Old Aug 8, 2002 | 03:09 PM
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Default Re: How do you know when your rotors are done? (kingrat)

Alex, try the Ferodo DS3000 pads from http://www.Cobaltfriction.com

I have used blues, and these pads are very simular, but don't tare the chit out of your rotors, mine still look fairly new from CMP.. And I still have 2/3 pad left, needless to say, I am very happy with them..
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