Was running an errand the other day and out of nowhere while coming to a stop, I heard a loud clunking/rough grinding noise. Sounded like I had some big rocks in the bed rolling around, but the bed is empty. Seems to be coming from the front end, I can feel the clunking through the brake pedal - pulled the wheels and nothing looks out of ordinary. Noise gets progressively louder the harder I apply the brakes.
Noise doesn't happen if I use the hand-brake, so that eliminates the rear brakes as culprit.
Rotors spin freely enough, calipers move as they should.
No signs of leaks at the axle.
If I wiggle the tires, the front u-joints don't show slop or signs of concern.
I have around 1500 miles after a complete rebuild, so nothing is old enough to be worn out.
Ideas?