I recently installed a big brake kit (Rotora - 6 piston - has 6k miles on it) on my 350z. Everytime I brake at 45mph+ the car would vibrate. I brought it to an auto shop and they said It was correctly installed, the rotors are not warped, the brake pads had a lot of life left in them, and the suspension is a-ok. I am thinking I'm thinking that it is uneven pad deposit or poor bed-in and sporadic pad-to-rotor transfer. What do you think?