Should I cut my cryogenic rotors for new pads?

[JerZeyStangz]

Tried to do research, and came up with nothing. I wanted to know if I should cut my cryogenic rotors for my new hawk pads. No, they are not warped but I dont want the pads to wear unevenly on the rotor. And will this cut my rotor life down? For those who dont know cryogenic rotors dont warp, and they last 100-300% more because of how they are treated compared to regular rotors.

 

[auto_x5.0]

If they dont warp, the rotors should have even wear unless there's other mechanical problems. I would waste the .003-.005 it would take to true those up to perfect just or a set of pads.

 

[1997gtRioRed]

if they still look good and dont have any irregular wear such as scoring, just leave em. i would scuff them up with a scotchbrite pad just to take off the glaze and give it a nice non-directional finish though, just to reduce the possibility of squeaking.

 

[JerZeyStangz]

Thanks for the suggestion fellas.

 

[joekd]

FYI - Cryo rotors can warp, they are just much higher resistance to warping

I spent a ton on cryo rotors for one of my old cars which were known to warp rotors badly, little over one year and I warped the cryos. Company I bought them from said they werent covered under warranty either so I just went back to cheap rotors and changed them twice a year

 

[JerZeyStangz]

FYI - Cryo rotors can warp, they are just much higher resistance to warping

I spent a ton on cryo rotors for one of my old cars which were known to warp rotors badly, little over one year and I warped the cryos. Company I bought them from said they werent covered under warranty either so I just went back to cheap rotors and changed them twice a year

Must of been cheap cryo's? I had mine on my 96' GT for about 10-20k on them and they took a beating. I bought mine from this company...

http://www.frozenrotors.com/

 

[joekd]

Actually I believe that is the exact company

As they pointed out this is right on their website

"Increase Performance

Frozen Rotors resist cracking, warping and fading. By using the cryogenic process to inhibit internal oxidation and increase thermal fatigue resistance, Frozen Rotors® can last up to three times as long as untreated rotors."

Notice the word "resist" not "prevent" used

As for "cheap" they were over $200 for a pair of plain (non slotted or drilled) cryo rotors, add in the price for EBC pads and it was one of the most expensive front brake jobs I ever did

 

[JerZeyStangz]

Actually I believe that is the exact company

As they pointed out this is right on their website

"Increase Performance



Frozen Rotors resist cracking, warping and fading. By using the cryogenic process to inhibit internal oxidation and increase thermal fatigue resistance, Frozen Rotors® can last up to three times as long as untreated rotors."

Notice the word "resist" not "prevent" used

As for "cheap" they were over $200 for a pair of plain (non slotted or drilled) cryo rotors, add in the price for EBC pads and it was one of the most expensive front brake jobs I ever did

That sucks!!! First time I heard someone warping cryo's. Had them on my car for a few years and haven't had a problem. Maybe the the brake pads were too aggressive, or the compounds in the pads held heat who knows. I know the combo with my hawk ceramics were good. Queit and had good performance with the cryo's.

 

[1997gtRioRed]

ive heard that ceramic brake pads can also cause them to warp because they dont transfer heat as well as semi metallics, therefore less heat transfer to the calipers/knuckle.

 

[96TANGERINEGT]

I never put new pads on old rotors that haven't been cut or replaced . Pad manufactures will tell u that , cause of glazing and uneven wear . If u want to keep the rotors atleast measure the runout on the rotors..

 

[JerZeyStangz]

I never put new pads on old rotors that haven't been cut or replaced . Pad manufactures will tell u that , cause of glazing and uneven wear . If u want to keep the rotors atleast measure the runout on the rotors..

I think I might just get them turned. Do not have tool to measure it.

ive heard that ceramic brake pads can also cause them to warp because they dont transfer heat as well as semi metallics, therefore less heat transfer to the calipers/knuckle.

interesting, mine been fine.

 

[auto_x5.0]

Where ever you go to take them to get turned should have some sort of way to measure your rotors, it would be a huge liability to the company if they just cut unknowingly. I've had rotors come into work .020 under the "throw-out limit" and they thought they were ok to cut because they didnt feel warped.

 

[JerZeyStangz]

Where ever you go to take them to get turned should have some sort of way to measure your rotors, it would be a huge liability to the company if they just cut unknowingly. I've had rotors come into work .020 under the "throw-out limit" and they thought they were ok to cut because they didnt feel warped.

So your implying to get them measured first just to make sure. I will try to make that happen.

 

[auto_x5.0]

Yeah, I would measure them to make sure they are within spec.

 

[framda]

Warping all depends on how much heat was applied to the rotor, and how resistant it is to the heat. I bought my 98 a year ago with 103,000. I just did a full brake job last week (at 110,000 miles) replacing the original pads and rotors. They didn't pulsate during braking but I wanted all new rotors and pads anyway. Many times I turned rotors that needed a little taken off but never vibrated. Another thing most people don't realize is that once a rotor is warped, you can shave down the top to be true, however, the grain of the metal has already been modified. You cant change it by turning the rotor. You can't put that cherry back once you busted it. I would remove just enough to true them up (while still being within specs.)