Subaru LEGACY Service Manual page 30

BRAKE
3) Measure disc rotor thickness.
A
NOTE:
Make sure that micrometer is set 5 mm (0.20 in) in-
ward of rotor outer perimeter.
Disc rotor thickness: A
Standard value
10 mm (0.39 in)
Service limit
8.5 mm (0.335 in)
REAR DISC ROTOR
B
BR-00036
BR-28