[Alpina_B3_Lux]

Originally Posted by aleckzandr

Alpina_B3_Lux, I have a question for you. I have narrowed my choices of a BBK down to the ST 60s and the PFCs (from www.bimmerworld.com/ - fortunately I can get a good deal.) The PFC BBK (ZR31) for the 335 have 355mm rotors in the front and 371mm (not a typo, that ~is~ 37.1 cm) in the back. Do you also have the rear BBKs from PFC? If so, by chance do you know if they fit BMW style 189 wheels (18" x 8.5" ET 37)? This is a consideration for me in my decision - to swap calipers for summer and for winter (at least for the rear axle) as my car is used year around.

Yes, I have the complete PFC BBK, front and rear (I wouldn't do it otherwise either, otherwise the brake balance will be out of whack). The rear discs are larger because PFC includes the OEM style hand brake in it which takes up some space. I would think that they would also fit 18" wheels, as I know of several people who have installed 18" wheels onto this BBK. In order to be sure I would drop them an e-mail though and enquire, alongside with the dimensions of the wheel you want to use.

Alpina_B3_Lux