Get the LM60 in 255/35/19 front and 275/35/19 rear. They'll fit the ZCP wheel perfectly and won't look stretched. I ran this setup last year and just put them on my car again yesterday. Performed really well no complaints.
2011 M3 ZCP | ESS VT2-650 | AKRAPOVIC EVOLUTION | 19" BBS Fi | BREMBO BBK | Future: M4 Competition Pack!