Bridgestone Turanza tires are not directional. That means that they can be mounted on a vehicle with the tread pattern running in either direction. The main difference between directional and non-directional tires is the tread pattern. Directional tires have a tread pattern that is designed to provide optimum performance when the tire is mounted with the tread running in one direction only. Non-directional tires do not have this restriction, so they can be mounted on a vehicle with the tread running in either direction.