I recently got an alignment done and tried Goodyear auto care first. They said the rear camber was off and I knew that since I have a lowered car. They told me the front was fine. I was cupping all four tires so I didn't like the anser I got. I then installed a camber kit front and rear and took it to better shop that works mostly on road race cars. They found a loose wheel bearing on the right front and toe was out all the way around. They corrected everything and the car drives great and is not showing any wierd tire wear.

I would suggest you take it to another shop that will check the front bearings and all the ball jounts before checking the alignment.