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Wheel Alignment: Inspection: Caster

  1. Place the front wheel on the turning radius gauge. Make sure the ground contact surfaces of the front and rear wheels are at the same height.
  2. Set the adapter into the center of wheel, and then set the wheel alignment gauge.
    Fig 1: Checking Front Wheel Caster
    G11578943Courtesy of SUBARU OF AMERICA, INC.
  3. Measure the caster angle in accordance with the operation manual for wheel alignment gauge.
    Model Tire size Caster
    WRX model 235/45R17 6°30'
    245/40R18 6°35'
    STI model 245/40R18 6°35'
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