What will fit??

Hello i am new to the forum and hopefully a soon to be BMW owner. I currently have a 2010 Audi A4 Quattro. I currently have Avant Garde M590 Brushed Grigio 19x95. et 35 i believe could be 40 with 255/35/19 would that setup fit on a 328xi m sport or 428xi m sport gran coupe. I see alot of guys runing 19x9 Rear and 19.9.5 Rear. With the Audi most people run the square setup. Does that not work on a BMW. If worse comes to worse i could always order smaller front wheels. I like to have a nice concave wheel that does not break the bank.