2005 Nissan Quest Vibrates when braking at High Speed

[jkhan]

Hi,

I have a 2005 nissan quest. it vibrats a lot when apply brakes at high speed, like existing a Highway. if I apply the brakes too hard there is no vibration but when I apply gradual brakes (specially existing Highway) the whole car starts shacking.

A machenic replaced the front wheel lower control arm bushings, did'nt help. I replaced the front brake pads and rotars but still problem. donot know whats next. could the rear brakes be an issue. should I change the rear brake rotars and pads ?

[hudy]

Could be rear brakes. Did you clean the front hubs before you put the front rotors on? Have seen dirty hubs cause a shimmy after brake replacement. Are the rear rotors all crusty and rusty? If so I would say yes, replace the rear brakes.

[1997Quest]

Have you replace front brake calipers?