I have only had my 2005 jeep a short while. When I first got it the brakes squeaked a little and the previous owner said his mechanic had told him it just hadn't been driven much recently. Jeep has 58K miles. They have squeaked most of the time since I have had it. About 500 miles.
I drove about 50 miles the other day on dusty gravel roads and now the wheels or axles are squeaking as well at slow speeds.