Alright I am about to blow a fuse....this damn car I have been working on has this funny vibration stemming from the passenger side...its sort of similar to the noise madewhen you have warped rotors...and it get progressively worse when the brakes are applied. I changed all 4 rotors and pads, master cylinder, passenger caliper, axles...and the damn intermittent thump is still there...still getting worst when brakes are applied...anyone have any idea what this might be?

 

it's from the front passenger side only?

 

worn lower control arm bushings, worn ball joints, worn tie rod end?

check all that stuff and let us know.....

 

Check the wheel wheel bearings...I bet thats your problem....make sure your axle nuts are torqued correctly before you assume its the bearings