2013 Subaru Impreza Owner's Manual - Page 396

11-26 Maintenance and service WARNING When a tire's tread wear indicator becomes visible, the tire is worn beyond the acceptable limit and must be replaced immediately. With a tire in this condition, driving at high speeds in wet weather can cause the vehicle to hydroplane. The resulting loss of vehicle control can lead to an accident. & Tire rotation direction mark & Tire rotation NOTE For safety, inspect tire tread regularly and replace the tires before their tread wear indicators become visible. Example of tire rotation direction mark 1) Front Vehicles equipped with 4 non-unidirectional tires 1) Front If the tire has the rotation direction specification, the tire rotation direction mark is placed on its sidewall. When you install a tire that has the tire rotation direction mark, install the tire with the direction mark facing forward. Vehicles equipped with unidirectional tires 1) Front