I would buy 255/35 and 275/35.... I would not get the sizes you are considering. You may have some slight rubbing at full lock with the 255/35 AD08's but it's so minor that it's not worth worrying about.
'08 E90 M3 - Alpine White - Sold
'13 E92 M3 - Silverstone II - Sold
'04 E46 M3 - Jet Black - BBS E88, KW Clubsports, Brembo BBK, SuperSprint Exhaust, Recaro