It might depend on the factory wheel options as well. If you can not get the car with 18" but only 19" or 20" wheels then they could fit a bit larger brakes. I also think 370 mm is a good guess as 380 mm is very large for a 19" wheel.
E92 M3 | Space Gray on Fox Red | M-DCT | CF Roof | RAC RG63 Wheels | Brembo 380mm BBK |
| Vorsteiner Ti Exhaust | Matte Black Grilles/Side Gills/Rear Emblem/Mirrors |
| Alekshop Back up Camera | GP Thunders | BMW Aluminum Pedals | Elite Angels |
| XPEL Full Front Wrap | Hardwired V1 | Interior Xenon Light Kit |