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.
2015 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Front Disc Brake
WARNING: This page is about a different car, the 2015 Subaru Outback and 2015 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
| Item | Specification | |||
|---|---|---|---|---|
| Size | 16-inch | 17-inch | ||
| Type | Floating 2-POT piston type Ventilated disc |
|||
| Effective cylinder diameter | mm (in) | 42.8 X 2 (1.685 X 2) | ||
| Pad size (Length X Width X Thickness) | mm (in) | 130.0 X 53.5 X 11.0 (5.118 X 2.106 X 0.433) | ||
| Pad thickness | mm (in) | Standard | 11 (0.43) | |
| Limit | 1.5 (0.059) | |||
| Effective disc diameter | mm (in) | 244 (4.61) | 261 (10.28) | |
| Rotor size (Thickness X O.D.) | mm (in) | 28 X 294 (1.10 X 11.57) | 30 X 316 (1.18 X 12.44) | |
| Disc thickness | mm (in) | Standard | 28 (1.10) | 30 (1.18) |
| Limit | 26 (1.02) | 28 (1.10) | ||
| Disc runout | mm (in) | Standard | - | |
| Limit | 0.05 (0.0020) | |||
| Clearance adjustment | Automatic adjustment | |||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.