ok so ya evrytime im driving my DX it feels like it wobbles in the back. I check my tires and everything is fine i dont see no bubbles that will cause my car wobble and from the outside the tires dont wobble at all they stay in place. also i hear a loud noise in the back like a thump or some rotations loud noise as if it were rubbing and i check if my tires are hitting or rubbing anything but everything is ok . Wat can cause this problem or wat am i suppose to look for? Also i dont think it makes a difference but when i check my drums in the back their not black or normal color their like corroded like orange brown does it mean i have to replace the whole rear drums or is just my bearings causing the noise? Also my tires are new too?