Some as the pads and rotors break in but it shouldn't be excessive.
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.
cheap;, no heat dissipation,worn out rotors brake cylinder collapsed into the rotor
Break rotors heat up very fast while drive and stopping, todays technology in my sense isn't the best on rotors. If you have a heavy foot and brake hard, that will contribute to warped rotors. Sudden stops will also case warping. Most brake Specialist (Les Shwab) recommend on new cars, and new rotors to brake easy, (light foot) on your new rotors for the first 1,000 miles of the rotors life. That way they have time to brake in.
A frozen brake caliper or if you just instaled new brakes and rotors you might have oil on the rotors as they need to be clean before installing.
most common reason your car would jerk while on the brakes is that you have warped your rotors. your rotors are what the brake pads grab onto to stop your vehicle. they are made of steel, usually mid-grade, or in some cases low-grade steel. as the rotors heat up and are cooled rapidly they can become out of round. or if the rotors are starting to wear thin, they cannot dissipate heat as efficently as they should, they can warp at this time too. If you have warped rotors, they reak havok on your brake pads. you will have to replace all warped rotors and brake pads as a set.
The size of your rotors refers to the diameter of the brake discs on your vehicle. Larger rotors generally provide better braking performance because they have more surface area to dissipate heat, resulting in improved stopping power and reduced brake fade. Smaller rotors may not be as effective at dissipating heat, leading to decreased braking performance, especially during heavy or prolonged braking.
Stepped hat rotors are more expensive than plain hat rotors. A stepped hat rotor has a groove in it, known as a heat break or heat shield, that helps distribute the heat away from the hub assembly, reducing the risk of brake failure. This is normally used in cars and trucks that will be towing or doing heavy duty work.
If you notice shaking as you apply the brakes this is generally caused by warped brake rotors. This happens as the brake rotors wears. Sometimes people take shortcuts by just replacing the brake pads and machining the rotors but as the rotor becomes thinner it cannot absorb the high heat that they operate in. Most likely this is the problem.
Brake rotors get extremely hot due to the friction generated during the braking process. When the brake pads clamp down on the rotors to slow or stop the vehicle, the friction converts kinetic energy into thermal energy, resulting in significant heat. Additionally, repeated or heavy braking, such as during high-speed driving or steep descents, can further increase temperatures. Excessive heat can lead to brake fade and potential damage to the braking system if not managed properly.
Disc brakes by their very nature can be noisy due to the high heat and pressures they work in. As you depress your brake a great deal of heat is being generated and holding the brake keeps these parts from vibrating however, as you release the brake , there is enough play to allow this vibration. Chances are your brake rotors have enough wear so they can no longer absorb this heat like they could when they were new. If it is troublesome I would replase the brake rotors and pads.
Warped rotors. Driving using the left foot to brake causes the rotors to heat up. Quenching the hot rotors by driving thru water will cause them to warp. The warped rotors cause the pedal to pulsate.
One or more of the brake rotors are warped from heat, caused by braking. Riding the brakes or always being on them, are usually the cause.