Your rotors need to be turned. They have become warped.
vacuum leak 65 power brakes run off a vacuum, when you apply your brakes you stop the air leak. 65;
If the rotors are warped it can cause a shake when you hit the brakes.
Applying the brakes with your foot!
Foot brakes are used to stop a car. In an emergency however both the foot and hand brakes can be used to stop a car.
have your front brakes checked
yes
yes, but only when the brakes are applied.
Warped brake rotors........
Your brake rotors are warped and need replaced/resurfaced.
rear brake drums or rotors are out of round.
no
hit the brakes....