I am going to order Style 128 replica rims in silver and i was wondering what size i should get. i am going to get either 21x10's or 21x9's all the way around. i know my stock 17'' rims are 7.5's and in the new bmw catalog for 128 style rims it shows the front wheels are 21x10 and the rears at 21x11.5.

What size would be better to go with? I dont want the wheel to rub on the wheel well when i turn or i dont want the rims to stick out too far past the wheel well either. Does anyone have any advice on this?

i am getting 285/35/21 michelin tires

would this set up have the same rolling diameter as my stock 17's?

thanks