Im running 20x10.5 +10 with a 15mm spacer which puts me at -5 and im dropped.
My fitment is really tight, but somehow it doesnt rub... it seems to camber in at just the write angle to miss the fender. But you also have to take into consideration how meaty your tires are.
Here is a pic of my fitment right after I had new tires put on.
