Staggered setup on e61
 

So I'm currently running the 172m style wheel on my e61, 19x8.5 w/ 245/35 F, and 19x9.5 w/ 275/30 R. I ve been doing some research and noticed alot of people running this set up, and some going with a 285 tire in the rear instead. Don't know how I feel about that (though I am considering) because I will definitely need to run spacers to make the 285s fit in the rear. So my question is is anybody familiar with running 245/40/19 int the front and 275/35/19 in the rear. I do know this setup is closer in overall diameter but I am kind of worried that the tire would rub on the outside fender. The car is still at factory height but I am planning on lowering it very soon.