I believe that they are the 'MV3' wheels.
As far as offset goes I think it's ET35 all round as standard on an E92 (staggered) but unsure as to whether that translates to the other chassis types.
Is your setup staggered or is it the same all round?
E92 335i | 6 Speed manual | BMS 4xLED Halo Bulbs | JB4 (waiting to be installed) | BMW Performance Gloss Black Grills | BMW Performance Exhaust | Smoked side Repeaters
Aero Front Lip | M3 Lip Spoiler |19" Cades Tyrus 'Gunmetal' with polished lips | Falken FK452 Rubber
........... More to come