I would be cautious about 305 rear. May rub slightly depending on your tire model. This is what others told me when I bought my P40.
255 front should have zero issues.
E92 M3 DCT
- AiM EVO4 Data Logger / KW Competition 2-Way / OMP Racing Seats / Brembo GT 365 / Pagid Yellow RS-29 / Rear Seats Delete
For Sale: Brembo