2004 gxp bonneville front brake rotor problems - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-15-2006, 01:35 PM   #11
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I just replaced my front pads with ceramic pads. Oringinal pads only lasted 22,000 miles. Am I reading this post correctly that the ceramic'* will most likely warp my stock rotors?
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Old 10-17-2006, 02:28 PM   #12
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Originally Posted by ggyingling
I just replaced my front pads with ceramic pads. Oringinal pads only lasted 22,000 miles. Am I reading this post correctly that the ceramic'* will most likely warp my stock rotors?
Nope, Any hard braking will warp those rotors on that heavy car. All it takes is one hard stop sometimes.
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Old 10-17-2006, 03:21 PM   #13
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Quote:
Originally Posted by Shadow
Quote:
Originally Posted by ggyingling
I just replaced my front pads with ceramic pads. Oringinal pads only lasted 22,000 miles. Am I reading this post correctly that the ceramic'* will most likely warp my stock rotors?
Nope, Any hard braking will warp those rotors on that heavy car. All it takes is one hard stop sometimes.
There are ALOT of factors. One hard stop by itself isn't one of them. Warped rotors on GXP'* are NOT common.
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Old 10-17-2006, 03:35 PM   #14
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Quote:
Originally Posted by willwren
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Originally Posted by Shadow
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Originally Posted by ggyingling
I just replaced my front pads with ceramic pads. Oringinal pads only lasted 22,000 miles. Am I reading this post correctly that the ceramic'* will most likely warp my stock rotors?
Nope, Any hard braking will warp those rotors on that heavy car. All it takes is one hard stop sometimes.
There are ALOT of factors. One hard stop by itself isn't one of them. Warped rotors on GXP'* are NOT common.
My dealer seems to think it was pretty common when I had mine replaced way back when. Remember I actually owned one of these cars
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Old 10-17-2006, 03:40 PM   #15
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and Shadow i dont think your dealer has seen the number os GXP'* that we have seen on this site......again they are not a common problem with warping to rotors....

i wouldnt trust what the dealer told me as far as i can spit and that is not far...remember my father worked as a tech at a GM dealer.....i Know what can be said to a customer to make them happy or what they want to hear
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Old 10-17-2006, 04:04 PM   #16
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Quote:
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and Shadow i dont think your dealer has seen the number os GXP'* that we have seen on this site......again they are not a common problem with warping to rotors....

i wouldnt trust what the dealer told me as far as i can spit and that is not far...remember my father worked as a tech at a GM dealer.....i Know what can be said to a customer to make them happy or what they want to hear

Could be true but I was just stating what the dealer said. Maybe they were refering to the non GXP rotors?

Anyway being a previous GXP owner I chimed in...sorry
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Old 10-18-2006, 02:35 PM   #17
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I think warped rotors are almost exclusive to how the brakes are used and the normal road conditions your car sees. I am a rotor maniac and have had rotor problems with every vehicle I own (alot) and have ever owned. I live in an area with winding curves and steep grades and use my brakes at the last possible moment most of the time. It really isnt hard to warp a set in a one years time GXP or otherwise. When I owned Taxi'* I would go through rotors and pads in 3-6 months time. On Diplomats, Caprices, and Towncars alike. Once in awhile you find a hung caliper and a slide that is frozen but driver characteristics and daily road conditions really define this problem.
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Old 10-20-2006, 01:06 AM   #18
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There are many theories about the cause of pulsing/shuddering brakes. I spent several years hanging around with brake engineers, and you could write a book...

Supposedly, the most important thing you can do is always properly torque your lug nuts, and tighter is NOT better.
Also the mounting surfaces of the hub, rotor and wheel must be clean and smooth. No paint or rust. There'* a theory that when you remove your wheel for whatever reason and the rotor is loose to the hub, rust or dirt will fall between the hub and rotor faces. When you tighten the lugnuts again, the rotor isn't flat anymore.

Personally, I find that if you're going to have trouble, it'll show up in 15-20,000 miles.
I never have the rotors turned... I replace them. (There'* no way a brake shop lathe is going to hold the runout as well as new.)

My GXP is at 14,000 miles... smooth as glass. (Knock on wood)
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Old 10-21-2006, 02:39 PM   #19
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Quote:
Originally Posted by ZeeVert
There are many theories about the cause of pulsing/shuddering brakes. I spent several years hanging around with brake engineers, and you could write a book...

Supposedly, the most important thing you can do is always properly torque your lug nuts, and tighter is NOT better.
Also the mounting surfaces of the hub, rotor and wheel must be clean and smooth. No paint or rust. There'* a theory that when you remove your wheel for whatever reason and the rotor is loose to the hub, rust or dirt will fall between the hub and rotor faces. When you tighten the lugnuts again, the rotor isn't flat anymore.

Personally, I find that if you're going to have trouble, it'll show up in 15-20,000 miles.
I never have the rotors turned... I replace them. (There'* no way a brake shop lathe is going to hold the runout as well as new.)

My GXP is at 14,000 miles... smooth as glass. (Knock on wood)
Yep firestone tightened my rims too tight and my rotors warped right after leaving thier store.
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