Subaru LEGACY 2001 Service Manual page 15

Thrust angle: r = (α − β)/2
α: Right rear wheel toe-in angle
β: Left rear wheel toe-in angle
NOTE:
Here, use only positive toe-in values from each
wheel to substitute for α and β in the equation.
(1) Front
(2) Body center line
WHEEL ALIGNMENT
B4M0194B
RS-13
Rear Suspension