Excessive or heavy and continuous braking may warp brake rotors. Braking hard (heating the rotors a lot) and then going through water (which quickly cools the hot rotors) may also cause the rotors to warp. If the brake pads or brake rotors are getting thin, the rotors will warp more easily.
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.
Sticky or stuck brake calipers. Sticky or stuck parking brake mechanism.
If you feel a pulsation on your brake pedal this most likely is the sign of warped rotors this happens when the brakes get to hot(the rotors will have a buish glassy look in certain spots). I suggest you bring it in to a mechanic to verify the problem. In most cases you can cut the rotors and the issue will be gone.
The flow of molten magma is what causes varying hot spots on Earth. Hot spots are also known to heat water beneath the ground.
There no way to prevent them getting hot unless you don't brake
You have warped the brake rotors. Driving fast & hard stopping or riding the brake will cause this when the rotor is hot and you are stopped with heavy pressure on the brake pedal. Replace rotors and pads.
Commonly called hot spots in the rotors. The rotors have been heated quickly because of heavy braking and have actually warped. Consequently, as the rotor turn thru the caliper, the brake friction increases and decreases causing the tire to flex and bounce. The bounce is the shake that you feel. Take the car to a brake shop and have the rotors turned.
get the rotors cut and replace the brake pads
If the car is only shaking when you are applying the brakes, the most likely reason is warped rotors. The rotors can become warped when they are overheated and then cooled off too rapidly. This can happen when you have hot rotors and then you run over a puddle and the water splashes on them.
When brakes are applied on a car, the friction between the brake pads and the rotors generates heat. This heat causes the temperature of the brakes to increase significantly, often reaching several hundred degrees Fahrenheit. It is essential to manage this heat buildup to prevent brake fade and maintain braking performance.
It most likely means that your brakes are very hot, and that some sort of liquid has touched your brake pads or rotors. Be careful about warping in the rotor.