The M235i can't beat a M5, maybe the M5 was on confort mode but not on M2 or M1 mode, impossible ! Don't dream the M235i kill the 0-60 in 4.7s or 4.8s not 4.3s as i rode on a previous review...
The M135i Xdrive auto (4WD) kill the 0-60 on 4.5s the M235i can't be faster with the RWD only
GreG