What would make the car shake when you apply brakes?

Yes it shuck before the new ones was replaced and only when you mash the brakes to stop and it's the front rotors that was replaced. Advance auto I think is where they came from.

got a friend who has a shop.does lots and lots of brake jobs.if he puts brakes on a car and the old rotors are still in spec.he takes them off and turns them on his old school lathe.also if he puts new rotors on,he also puts them on his lathe and turns them a little,yes he does!!they get warped from the way they are sitting/laying/leaning on a parts house shelf,and thrown around,and he gets most of the brake parts if not all of them at Advance Auto Parts! he will not put new brakes on a vehicle unless he turns the rotors first,old or new ones.i was there one day many moons ago and ask him,what are you turning new rotors for.well he showed me why,the metal starting peeling off after the machine starting cutting at a certain point! might not be your problem,but it also may be?