Tire Rotation: Inspection

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.

When the tread has worn down to less than 1.8 mm (0.071 in) or the wear indicator appears across the tread, replace the tire. (Replace the right and left tires as a set.)
If the tire appears to be worn unevenly, adjust the wheel alignment.
Rotate tires periodically (12, 000 km/7, 500 miles) as shown in the figure, in order to prevent them from uneven wear and to prolong their life.

When the direction of tire rotation is not specified

Fig 1: Identifying Front Tire Rotation Pattern
Courtesy of SUBARU OF AMERICA, INC.
When the direction of tire rotation is specified

Fig 2: Identifying Front Tire Rotation Pattern

Courtesy of SUBARU OF AMERICA, INC.

Fig 3: Identifying New/Damaged Tread And Tread Wear Indicator

Courtesy of SUBARU OF AMERICA, INC.