I have 1995 Subaru Legacy Wagon (non-Outback model). About a year ago I replaced front calipers, all the rotors, and pads to deal with a "thump thump thump thump" when braking down a hill for example. A rotor or rotors must have warped somehow I thought. The new stuff smoothed out the braking. I was happy. A year later the "thump thump thump thump" is back, along with an occasional squealing I notice when I'm rolling around next to walls or other cars. I'm stuck. Why does it keep doing this? I'm pretty sure it's the right front (both times). Do I really need to replace the rotors again? Are the brand new calipers I put in sticking? I'm not that hard on brakes. I don't ride them. When I first picked up the car with 60k, it tore up some tires which cupped badly on the outer edges. I concluded they were just cheap tires and I haven't noticed that on two subsequent replacement sets. I'm bothered that something just seems slightly unbalanced and wobbly about the car and is beating up my brakes. Any thoughts? Thanks in advance.