Replacing pads on the 987's fixed monobloc calipers is a moderate DIY job. Do not attempt this on PCCB (yellow caliper) cars without the correct ceramic-specific pads and procedure.
What you need
- Correct front/rear pad set for your variant
- New brake-pad wear sensor(s) if the old ones are cut or brittle
- Brake cleaner, a piston-retraction tool, anti-squeal or lubricant for the pad backs and pins
- Torque wrench, jack and stands, the wheel-bolt socket
Procedure
1. Loosen the wheel bolts, raise and secure the car, and remove the wheel.
2. Note the routing of the pad wear sensor and unplug it. The 987 uses a wear sensor that grounds when the pad wears down and triggers a dash warning; fit a new sensor with new pads.
3. Remove the pad retaining pins and clips and slide the old pads out (a pad-only job usually does not require removing the caliper).
4. Inspect the disc against the minimum stamped on it (base front min 22 mm / S front min 26 mm). Replace discs if at or below minimum.
5. Push the pistons back gently, watching the fluid reservoir so it does not overflow.
6. Fit the new pads with anti-squeal on the backing plates and reinstall the pins and clips. If you removed the caliper, torque the mounting bolts to about 85 Nm.
7. Refit the wheel. Wheel-bolt torque is 130 Nm (up to MY2011) or 160 Nm from MY2012 — apply a thin film of aluminium paste to the threads, and tighten diagonally.
8. Before driving, pump the pedal until firm, then bed the pads in per the maker's instructions.
Notes
- Replace pads around 2-3 mm friction material; consider a 2-year fluid flush at the same time.
Sources: