275s should fit without issue on a ZCP front wheel, the issue is a 9" wheel won't provide the best support for a 275 width tire. A 275 really should have a 9.5-10" wide wheel, will it fit safely on a 9" wheel, yes it will just not optimal.
2013 M3 Coupe-MR/BLK ZCP, ACM test pipes, BPM Stg2 dev. tune and Megan catback, AFE Stg2. with C/F elbow VMRV810 19x10&19X11 275/295 Mich PSS.
Previous rides: 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk