I would suspect rotors as well. Mine was doing that too and I finally replaced the original rotors with some Brembo rotors (not drilled or slotted) and Hawk HPS pads from tirerack.com. No problems since and the pads gave a little increase in brake power, so I'm pleased.


'97 4Runner, '06 F350, '86 4Runner, '05 WR450
http://home.4x4wire.com/erik