[Bee Pee]

Originally Posted by Cateye

http://www.f30post.com/forums/showthread.php?t=976723

The MP rotor brakes are the same size as stock M135 (blue) caliper rotor.. only that its dimple/slotted. In fact you could just change the rotor but coding is need. A few guys have done it.
Cheers

I disagree, BMW MP BBK rotors are larger and std blue M135i calipers will not fit as-is because they are set for stock 340mm dia rotor.

MP rotors are 370mm dia ie 15mm larger radius. At the rear dia is same stock v MP BBK at 345mm

You can however upgrade rotors to dimple and slotted, similar to MP but keeping same size as std:-

Front rotor: 340mm = Part Number 34 10 6 797 602

Rear rotor: 345mm = Part Number 34 20 6 797 598

If someone has fitted 370mm rotor to std blue m135i caliper, then I'd be interested to know more details and be glad to be proven wrong.....