Car is in shop now, the service dept. guy said he doesn't know why the back tires are already bald vs. the front tires being good. He said the car may be out of alignment? He's not sure, but he wants me to buy new tires. Didn't say anything about fixing the alignment. The car is at a Ford Service dept. at the dealership we bought it at a year ago and now has 23,800 miles on it. This is the second time I've had it in the shop and the visits would have been closer together if I had had the time to deal with all the problems this car is having. This car has great fuel efficiency, but that is only good if you can drive it!