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Generally speaking, warping is caused by heat. IE; the overheating of the rotors. There can be several causes for overheating. Undersized rotors, used rotors that have been over machined, "riding" the brakes, or a stuck brake pad which is rubbing on the disc all the time, or excessive braking.
I'd look at the last two options. A stuck brake pad is not unusual and means that you need to look at the operation of the calipers. If you pick up a Haynes or Chilton manual for the car, it will have a brake system maintenance chapter.
Excessive braking happens when um, you brake too much. (I know that sounds like the scene from Amadeus where the King tells Mozart that there were too many notes) I understand that you use just enough brake to stop the car and no more. The question is from what speed and at what distance. My daughter used to scare the hell out of me when she was learning to drive and I rode with her. It seemed that if she saw a stop sign or red light, she'd speed up to get there and then lay on the brakes hard. That's excessive braking. It took me a long time to get her out of that habit. Excessive braking also occurs here in the mountain southwest when people don't quite handle the mountain roads and passes well. Riding the brakes down a mountain road can heat up the rotors and pads quickly. This can happen too, when one gets going faster than expected on a downgrade and needs to brake really hard to slow down.
When going down a grade, hold a reasonable speed/rpm by applying the brakes firmly, but only when you exceed your given speed/rpm goal. Then let the engine do some of the braking. If you exceed the speed/rpm again, brake firmly but briefly again. There's really no need to keep your foot on that brake all the way down the grade.
I got a bit long winded here, but I wanted to give you my rap about excessive braking. If you are continually replacing rotors, there is a serious heat build up happening. This is what you need to address. Good luck ~
FriPilot
Wiki User
∙ 15y ago
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Why are the brake pads on a 2004 Pontiac grand am not wearing evenly?
Warped rotors or sticking caliber.
When you hit the brakes your steering wheel shakes on a 2007 Pontiac grand prix?
Your brake rotors are warped.
Pontiac grand prix gt the break petal vibrates when you break are your rotors warped?
yes they are out of round not true anymore
What can cause your 2004 Pontiac vibe to shimmy and shake after you had tires rotated and balanced?
It could be your rims are bent. Or it could be the rotors are warped
Do warped rotors cause car to shake only when giving it gas?
No, warped rotors will cause vibration when braking.
Why would your car shudder during braking?
i would suggest getting an m.o.t I suspect the brake rotors are warped. Machining or replacement of rotors is necessary to correct that problem.
Brake pulsation New hubs and Rotors?
I don't know if you are saying you have the new hubs and rotors and still have pulsation, or if you are asking what causes pulsation. If you have pulsation on slowing this is due to warped rotors, and you need to change the rotors and the brake pads, not the hubs. Not too expensive: 2 rotors and brake pads for my Pontiac is about 55 bucks. DIY of course.
Why does your car shimmies when you apply the brakes?
Your rotors are warped. You will need to have the rotors turned or replaced and new brake pads installed. Warped rotors are caused by over tightening the lug nuts or by excess heat from high speed stops or riding the brake pedal.
What does it mean when you hear knocking as you brake?
warped rotors
Your Montero shakes when you push the brakes?
Warped rotors
What would cause a 2003 maxima to shake when hitting the brakes?
A common reason is that the front rotors have warped. Go check out WikiAnswers on the topic of "warped brake rotors". Rotors should wear out smoothly in normal driving. Use of the brakes that generate lots of heat (hard braking, riding the brakes) will result in warped rotors.
Is there a rumbling noise when you brake with warped rotors?
There can be. Only way to know is have your brakes and rotors inspected.
