Wheel Alignment Angles: Caster

Caster is the tilting of the steering axis either forward or backward from vertical.

Fig 1: Identifying Caster Is Tilting Of Steering Axis Either Forward Or Backward From Vertical

Courtesy of MAZDA MOTORS CORP.

A backward tilt is positive (+) and a forward tilt is negative (-). Front caster adjustment is not a separate procedure on this vehicle. Front caster should fall within specification when the front camber is adjusted.