my money is on wheel hub, jack up the front end so the wheels are off the ground and spin each wheel, listen to each one carefully. they should be mostly dead silent
also check for wheel play at 12 & 6 there should be none, some slight play will be normal at 9 & 3 because of the steering.
@170k plus you are past the typical life of hub's which is 165k
if it is not that then you should be able to hear some kind of noise by spinning the wheel if it is a rock or brake related, the brake pad sensor could be the culprit as well.
take the wheels off and use a flashlight to look at the pad thickness
you can grab a jack at harbor freight for cheap