rotors warping
Thread Starter
Cruising
Joined: Dec 2011
Posts: 12
Likes: 0
From: mckinney tx
rotors warping
i have a 2008 m/t non z51 package.. i have been feeling the brakes pulse at speeds around 70 and when i am coming to a stop as i press the brakes.. what should i do??? thanks for any help!!
Drifting
Joined: Jun 2006
Posts: 1,730
Likes: 4
From: Delray Beach Florida
you can replace the rotors or have them spun. If you remove them yourself your local auto parts store can spin them for you. Or most brake shops will will be able to spin them for you while they are replacing your pads.
Race Director
Joined: Jan 2005
Posts: 10,924
Likes: 854
From: Daytona Beach FL
The "Warped" Brake Disc and Other Myths of the Braking System
Take a look at the StopTech White Paper main page to read many more very good articles on your brakes, including fixing your problem by running an aggressive race pad to abrade down the uneven pad deposits that are causing your problem:
http://www.stoptech.com/technical-su...l-white-papers
Just MHO, YMMV!!!
Bob
Le Mans Master
Joined: Jan 2001
Posts: 6,449
Likes: 371
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
I'd try scuffing up the rotors with 80 grit garnet paper (not sandpaper) to cut off the built up pad material.
Tom
Thread Starter
Cruising
Joined: Dec 2011
Posts: 12
Likes: 0
From: mckinney tx
Well I think this was a wasted post due to the fact that I couldn't see the inside part of my tires and noticed they have warn pretty much to the end of their life. I replaced the tires that I had on the car which were Goodyear f1 gs2 run flats with Nitto invo's. That fixed it all. They were just way too warn out and out of balance. Thanks for the suggestions though.
Safety Car
Joined: Jan 2004
Posts: 4,974
Likes: 14
From: Pinellas Park Fl
St. Jude Donor '08-'09 & '12, '14
I hold the same point of view regarding "warped rotors" that you can read about in this StopTech technical report - click on the link below to read it:
The "Warped" Brake Disc and Other Myths of the Braking System
Take a look at the StopTech White Paper main page to read many more very good articles on your brakes, including fixing your problem by running an aggressive race pad to abrade down the uneven pad deposits that are causing your problem:
http://www.stoptech.com/technical-su...l-white-papers
Just MHO, YMMV!!!
Bob
The "Warped" Brake Disc and Other Myths of the Braking System
Take a look at the StopTech White Paper main page to read many more very good articles on your brakes, including fixing your problem by running an aggressive race pad to abrade down the uneven pad deposits that are causing your problem:
http://www.stoptech.com/technical-su...l-white-papers
Just MHO, YMMV!!!
Bob
Have you never seen rotors 'warped' from improper torqueing of the wheels or having some people wash their wheels before the rotors are cooled and causing them to warped?
Living in the racing world may be cool, but in the real life world, warping does exist from something more than pad build up.
Tech Contributor
Joined: Oct 1999
Posts: 41,055
Likes: 9,817
From: Charlotte, NC (formerly Endicott, NY)
So what's the point in GM giving a lateral runout spec on the rotors?
Have you never seen rotors 'warped' from improper torqueing of the wheels or having some people wash their wheels before the rotors are cooled and causing them to warped?
Living in the racing world may be cool, but in the real life world, warping does exist from something more than pad build up.
Have you never seen rotors 'warped' from improper torqueing of the wheels or having some people wash their wheels before the rotors are cooled and causing them to warped?
Living in the racing world may be cool, but in the real life world, warping does exist from something more than pad build up.
I haven't ever seen a rotor that is clamped between the wheel and the hub be warped by over torquing the lug nuts. Rotor run out can come about due to several things. Some of them are manufacturing run out that is out of tolerance, hub run out and uneven wear due to pad deposits that cause a section of the rotor to harden and wear differently than other sections.
If rotors warped because somebody washed the car when they were hot there would be millions of car with warped rotors due to driving with hot rotors in a hard rain with deep puddles splashing them with cold water.
Bill
Safety Car
Joined: Sep 2007
Posts: 4,359
Likes: 6
From: Los Alamitos California
St. Jude Donor '09
Actually it doesn't. Running on the track will subject the rotors to more abuse than anything a street driver can do. Much more abuse.
I haven't ever seen a rotor that is clamped between the wheel and the hub be warped by over torquing the lug nuts. Rotor run out can come about due to several things. Some of them are manufacturing run out that is out of tolerance, hub run out and uneven wear due to pad deposits that cause a section of the rotor to harden and wear differently than other sections.
If rotors warped because somebody washed the car when they were hot there would be millions of car with warped rotors due to driving with hot rotors in a hard rain with deep puddles splashing them with cold water.
Bill
I haven't ever seen a rotor that is clamped between the wheel and the hub be warped by over torquing the lug nuts. Rotor run out can come about due to several things. Some of them are manufacturing run out that is out of tolerance, hub run out and uneven wear due to pad deposits that cause a section of the rotor to harden and wear differently than other sections.
If rotors warped because somebody washed the car when they were hot there would be millions of car with warped rotors due to driving with hot rotors in a hard rain with deep puddles splashing them with cold water.
Bill
I've never had a "warped rotor". Watch a rally car go from glowing red rotors to crossing a stream and you'll realize you won't ever subject a rotor to the kind of abuse they live through. Their rotors aren't "warped", and neither are yours. San
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