I know the line should go on the outside, but there are no arrows saying what direction they should go. Its tough to explain i guess, but what i'm saying, is that from the picture above, the tires would go on the right side of the car. But if i were to flip the tires around nad have the line on the left side, they would go on the left side of the car. Now when i flip them around, the tread faces the other way.