Thanks, Marty. The wheels are balanced. If not, the steering wheel would
shake at certain speeds. I am quite familiar with the shake-during-brake
problem but this one puzzles me a bit. Usually, its caused by the zeized
caliper sliders, or just plainly warped rotors. Sometimes though, rotors
will warp when it stays hot too long and pressure is applied by the pads
when braking. But it will not necessarily stay warped after it cools down.
I just found pads online made by Textar that supposedly helps prevent this
problem. I might give it a try.
I wonder if air in the brake lines would cause the pads to apply a slight
pressure on the rotors. I also noticed much brake dust on the front wheels
after a long trip. Maybe this is normal.