Here is a car with 8.5 et 20 front
http://www.e90post.com/forums/showpo...7&postcount=34
"Tyre sizes 225/35/19 front 255/30/19 rear and it still rubs on the rear" Said the owner.
Your rear would stick out 6mm more than that car 9.5 et20
Here is a 19x10 et 20 rear but fenders are rolled/pulled
http://www.e90post.com/forums/showpo...&postcount=460
Canīt say for sure will it rub or not, so many variables. But think for rear you need stretched tyres, rolled maybe pulled fenders depens on tyre size.Maybe even camber adjustments is needed.