Subaru Legacy 2003 Service Manual page 2610

Thrust angle: r = ( α α α α − − − − β β β 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 )
(1) Front
(2) Body center line
WHEEL ALIGNMENT
( 2 )
FS-00025
FS-13
FRONT SUSPENSION