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.
2017 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Front Disc Brake
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
| Item | Specification | ||
|---|---|---|---|
| Size | 17-inch | ||
| Type | Floating 2-POT piston type Ventilated disc | ||
| Effective cylinder diameter | mm (in) | 40.4 (1.591) | |
| Pad dimension (Length x Width x Thickness) | mm (in) | 117.8 x 50.5 x 11 (4.638 x 1.988 x 0.433) |
|
| Pad thickness | mm (in) | Standard | 11 (0.43) |
| Limit | 1.5 (0.059) | ||
| Effective disc diameter | mm (in) | 265 (10.43) | |
| Rotor dimension (Outer diameter x Thickness) | mm (in) | 316 x 28 (12.44 x 1.1) | |
| Disc thickness | mm (in) | Standard | 28 (1.1) |
| Limit | 26 (1.02) | ||
| Disc runout | mm (in) | Standard | - |
| Limit | 0.05 (0.002) | ||
| Clearance adjustment | Automatic adjustment | ||
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.
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