What about the rear brakes?

Does the M Disc and calipers fit or what kind of setup do you want to drive at the rear?

I'm also interested in the needed mods for the 6-piston RR brake

Yes that is true

The range rover 6 piston brembo requires the the mounting insert to be removed from the caliper and then place a blank one in its place. Once in place you drill the blank insert to the dimensions of the BMW X5 caliper hub mount. Use a set of caliper bolts 12mm longer than the original and then mount up. I a cannot take credit for the using the rover calipers that credit goes to another board member" ilias051266" He did this upgrade first.

Man that sound simple. The calipers are cheaper than the BMW one also the rotors. That seems to be the way to go do me.

I have a phase II for the rears that I have not completed assembling yet. So for now I am just running the rear OEM set up. The problem you encounter with the rears is that the hub of the rotor is uniquely tall and precludes you from picking one of the other BMW rotors.

Yes the Rover application is far less expensive and affords you other choices of rotors that are more budget friendly. I just happened to stumble across the BMW M calipers that made this an easy upgrade. The unfortunate thing is the 390mm BMW rotors are costly and was by far the most expensive component/s for the upgrade. If I did not have the BMW X5M calipers I would definitely have done the Rover upgrade. This was the path that I was on.

Doesn´t the F10 M5 Rotor fit?

They are avaible on the aftermarket and the only difference I could find is that they are 5mm taller.

And there is difference of 1,2mm in the deep, but you could manage this with spacers.

Back to the RR Brake: Which inserts do I need? Is this a helicoil?

I´m really thinking about that upgrade to, but the BMW rotors are really expensive... :(

The only this is the Range Rover rotors is that they aren't a 2 piece design. That's what makes them so cheap.

Yes after you re drill the new aluminum inserts for the rover calipers then you can install steel helicoils of your choice. Then bolt up to the X5 mounting hub and your done.

True the Range Rove rotor is one piece which makes them much more affordable over the BMW rotors. The Range Rover rotor is a direct fit including hub bore.