I was 205 front with my previous summer set and after mounting 225 front on my 18", I was ... waouh :O ! There was so much grip front !
Moreover, that was the same for the rear : more stable ! I came from 225 to 255 and it was night and day ! That's why, like the others, I would recommand to swap the 225 rear to 245 or 255
2010 e82 120d : TiAg
/Blk, M Sport package, Stage 1 chiptuning 222hp 345lb/ft, CDV, BMC airfilter, VMR vb3
BMW Performance : strut brace, pedals, gear konb and emergency brake, side skirts, spoiler, diffuser, exhaust ... I know, I have quite all the Perf' stuff