Not sure if this will help but this is what I got in my BMWP brake kit front and rear (when it used to be available) for my previous 130i Feb 07 build (one of last of pre LCI)
They are near enough the same brakes as the 135i but with different front discs which are grooved and drilled. I also hear the discs have an aluminium bell.
I test drove a 135i recently and the brakes have much better progressive feel compared to the ones on my 130i and this influenced me to changed mine.
PS Minimum size wheel is 17" for these brakes.
Here are some pics of what you get in the kit
there is also a little bag of bits like bolts etc. forgot to put it in the picture
ops: