On your tire wear. It could be from an alignment problem. It could be from the toe being way off or it can be from excessive negative camber. On the fronts, a camber kit may resolve the problem. There are no such kits for the rears. If the tires are rotated regularly, it may simply from the fronts. That's how they wore on mine before installing the camber kits.
It would help if you had some alignment readings.