I promised another member I would document the process as best I can. Picture's aren't all that great with it being such a dull wet miserable day.
Tools:
- Jack
- Wheel brace
- 330i brake calipers and carriers
- Brake Pads
- 325mm brake discs
- 16mm wrench / spanner
- 6mm allen key
- 14mm spanner
I started on the rear discs. So first thing's first, jack up the car and remove the wheel.
Undo the two 16mm bolts on the rear of the caliper. Then twist and release the caliper.
The brake discs are held on by a single screw that requires a 6mm allen key to release. Then the disc can come off.
It's at this point I discovered that the 294mm Brembo brake discs I had purchased were too shallow to allow use of the handbrake, nor would any 294mm disc fit. So frustratingly, after all that I had to abandon ship, rebuild and move on to the fronts
However, the steps above apply equally to remove the caliper and disc from the front wheel and I had better photo examples of them as right about now the heavens opened just to rub salt in the wound. But that wasn't going to deter us, so we ploughed on.
Again, repeat the steps above for the front procedure.
- Jack up, wheel off
- undo 16mm bolts, caliper off
- undo screw with 6mm allen key, brake disc off
Undo the brake flexi pipe on the rear of the caliper with a 14mm spanner and remove the pad wear sensor. Then twist the caliper off completely.
Now you can mount your new 325mm brake disc and re-insert the screw we removed earlier.
Undo the pistons from the caliper carrier and mount the carrier to the brake disc.
Screw the flexi pipe onto the new caliper, you may need a caliper compressor at this point. Insert the brake pads and bolt the caliper on, reinserting the pistons. Attach the pad wear sensor.
Wheel back on and we're all done. Besides the palava with the rear discs it was actually a lot easier than I expected, and looks a damn site better than beforehand! Hope this helps anyone thinking of doing the same.
looks great.
