The primary disadvantage of directional tires is that they can only be rotated from front-to-back. Side to side rotation will require an extra charge of having the tires dismounted, flipped and remounted. Since they can’t be rotated in the standard pattern, directional tires usually have a shorter tread life then normal tires. Some vehicles have different sized tires on the front and on the rear. If this is the case on your vehicle, you will not be able to rotate directional tires at all unless you dismount and remount them.