Yeah, you would need to fit 235/55 tyres rather than the standard 235/45 to be within an acceptable tolerance, but it would give you comfort from the extra sidewall height.The M3 wheels will not be suitable - at least not with their standard tyre fitment as the tyres are smaller diameter than those fitted to the MY. So you would have to find an 18" tyre with a higher profile to compensate.
Also the MY wheels are 1" wider than the M3, you cannot comfortably put 255 tyres on the M3 rims.