Brake "thunk" sound...

[Kayvan]

I have had a strange issue with my right front break.

The car brakes fine and can even lock rear wheels for split second in panic stop.

At speeds of over 70mph it distinctly pulls to the right in sudden slow down; at lower speeds its straight.


Recently after some fast runs / stops down curvy hills, i noticed a distinct "thunk" sound when I pressed the pedal. Cant repeat it when I take drive following weeks with cold brakes, but happens at end of 2-3 hr drive.

Its a metal to metal sound almost like suspension bushing has slipped out or cracked; or a mount is off. Not the grab, shudder I am used to with pads wearing down or mis-adjusted calipers.

Calipers are new, flex hoses are new, and fluid was changed about 6 mos ago.

[Kayvan]

Dont reply all at once!

The pads must have glazed or fluid heated up.

Wore off after gradual use.

Couldnt replicate this again; brakes engaged at all levels fine.

[Benz Dr.]

My guess is that no one had any idea which is why you received no replies.

 Generally, when you hear knocking or thumping noises it tends to be something loose or a part that's hitting against something else.

Pretty hard to give a good opinion without seeing the car or hearing the noise.