@Mysterae_ nicely done, any particular snags or points of note?
Have you done your rears at all?
Only a few snags but nothing major:
- BMW use fixings that seem to be uncommon in typical sets, so make sure you have 9mm hex socket and a 18mm socket or spanner before you start.
- The spring clip is a pain to refit without scratching the caliper.
- Check the level of the brake fluid in the reservoir before you start, especially if you've had it topped up during a service. When you push the caliper pistons back in that fluid has to go somewhere and will pee out of the lid on the reservoir! I used a Calpol syringe to remove excess brake fluid cleanly and easily, probably removed about 40ml of the stuff.
- Make sure you pump the brake pedal before moving off, you'll hear the caliper pistons close.
- Remember to reset the maintenance schedule on iDrive.
With the discs being so expensive, wait until Eurocarparts have a deal on, I got about 40% off the lot when I bought them many months ago.
Regarding the rears, I've only replaced the pads. As the same pads do the parking brake and is motor driven, technically you need a ££K machine to send the command to retract the piston. Nah! Remove the motor/servo from the caliper and retract it by hand using a torx bit, then push the caliper piston back in. Refit motor, pads and caliper. 3 hours exploratory work one side, 30 minutes the other side doing that job!