there are several of us who run NT-01's 275/35/18's quite successfully on our M3 's.
I also have the Arc-8 ET-25 wheels and have no problems with them with this combination. Enjoy.
Don't run any spacers on them either.
2011 e92 M3 Monte Carlo Blue ESS 535
2010 Honda FIT
2006 SLK 55 AMG