You might want to check your rotors and pads and check for warping. Try bleeding the brake line and make sure there is no air in the line as well some times it can cause pulsing
This is probably due to worn brake rotors on the brakes, if there is no vibration when driving then this will be the cause.
Vibration when applying brakes is most likely warped rotors. Another cause could be loose caliper bolts.
brake caliber
If the car vibrates when the brakes are applied, it could be a sign that the brakes or rotors need to be checked or replaced. When a problem like this occurs, it is best to get it checked out as soon as possible to avoid worsening the problem.
Chattering/vibration at all speeds. Chattering when brakes are applied. Poor fuel economy. Noise.
If the car vibrates when the brakes are applied, it could be a sign that the brakes or rotors need to be checked or replaced. When a problem like this occurs, it is best to get it checked out as soon as possible to avoid worsening the problem.
If you suspect something, get them checked. If you get vibration while applying the brakes, get them checked. If you get grinding noise from the brakes, get them checked.
If it shakes only when the brakes are applied, its the brakes. Just because they are "good" and stop the truck well doesn't mean they are balanced and wont cause a vibration.
Vibration when applying brakes is most likely warped rotors. Another cause could be loose caliper bolts.
Warped brake rotors will cause pulsation (or vibrations at high speeds) when the brakes are applied. This may also go on to misalign the calipers and cause other vibration related damages.
If you have vibration when you use the brakes, the most likely cause will be warped or excessively worn rotors, usually on the front wheels. Unless you are familiar with working on brakes, it is best to take the car to a qualified mechanic for service or repair.
The driver suddenly applied the brakes.