Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2020 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Front Alignment (Inspection Value)
- WRX model
Tire size 235/45R17 245/40R18 Wheel arch height (Tolerance: +12 mm-24 mm (+0.47 in-0.94 in)) mm (in) 375 (14.76) 370 (14.57) Camber (tolerance: ±0°30' Differences between RH and LH: 35' or less) -0°45' Caster (referential value) 6°30' 6°33' Steering angle (tolerance: ±1.5°) Inner wheel 37.5° 36.4° Outer wheel 32.9° 32.0° Toe-in mm (in) 0±3 (0±0.12) Toe angle (sum of both wheels): 0°±0°16' Kingpin angle (referential value) 15°14' 15°22' - STI model
Tire size 245/40R18 245/35R19 245/35ZR19 Wheel arch height (Tolerance: +12 mm-24 mm (+0.47 in-0.94 in)) mm (in) 370 (14.57) Camber (tolerance: ±0°30' Differences between RH and LH: 35' or less) -0°45' Caster (referential value) 6°33' Steering angle (tolerance: ±1.5°) Inner wheel 36.3° Outer wheel 32.0° Toe-in mm (in) 0±3 (0±0.12) Toe angle (sum of both wheels): 0°±0°16' Kingpin angle (referential value) 15°22'
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.