I just got this jeep so I don't know much about it. My front brakes were replaced about 3 months ago, rotors and drums. I had one bad shock and serpentine belt also replaced at that time. About 2 months ago I started hearing a horrible squeal when I pressed on the brakes. I then noticed this squeal while the vehicle was in motion at a slow speed. I took it back to the brake shop and they told me brakes were fine...the squeal was due to "pressure on the axle due to after market wheels". The wheels I have are the original Rubicon wheels - nothing after market. Any ideas?