Series 1 400i Brake Pad Replacement

Schumi (??)
One warning about your Porterfield pads. They were the first ones I bought for my car. Since our calipers are BMW with spacers for wide discs, Porterfield makes the pads in two thicknesses with our pads being the thinner of the two. If you have the thick ones they will not fit, but Porterfield customer service was great and quickly exchanged them with an apology. So you don't get disappointed when you start on the job, call them first and check that they sent you the right ones.
As for procedure, it is just like doing any other fixed caliper pad, with BMW being exactly the same. The hardware, pins and springs will need a good clean up and a dab on hi-temp grease in the right places. Have a good tool to push pistons back and check your piston "boots" for damage.
Enjoy the job it is straight forward.
Ken

 

should be 15 mm

 

Others are 18 mm.

 

Schumi
No need to remove calipers to change pads. Just push out the two pins holding the pad clip. Clip falls out. Push pads back a bit with channel lock to pull old ones out. There are several standard tools to push pistons "home" without damaging the rubber boot; do NOT use a channel lock for that. Before reassembly, clean up the pins and clip and apply a thin layer of high temp. grease on sliding points. Good luck, its easy!
Ken

 

My 400 Auto et my 365 GT4 2+2 had a lot (really a lot) of brake noise at low speed and soft braking (an embarrassment while driving in the city). Both cars were missing the anti-noise material which is located on the plate between the pistons and the brake pads. New plates with anti-noise material solved this noise problem, about 500km driven so far (I realise no solution is eternal).

 

rovexienus
Were did you buy the backing plates with anti-noise material? Part #?
I've been using some pink gooey material and it works for a while.
Ken

 

I use the simplest tool in my tool box, see pics. I did a search and no one wants to sell anything so simple anymore! Note the tool has two square corners and two rounded corners. You want the round corners facing the piston; the disc does not mind the square corners! The 3/8" extensions gives you good control of pressure on piston. Sorry I can not find a link for you.
As another note, whenever I change pads (or any other brake work) I always purge some fluid from the calipers. When pushing pistons back is a good time to get 'stale' fluid out of caliper.
Ken

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Hello Ken,

Apologies for the delay, here is the complete order from Maranello Classic Parts (https://www.ferrariparts.co.uk/) back in September 2019:

114017 Anti Squeal Shim
134848/A Front Brake Pad Set
115962 Plate
108073/D Front Pin Kit

As I recall the backing plate (P/N 115962) came with the Anti Squeal Shim already glued on. So the P/N 114017 I got is in addition.