James, it has to do with the offset required...you could in fact get off sets that wouldn't have the lip...but, I just gave up with all the wheel choices out there and stayed stock, but of all the wheels out there, I think the wheels above was one of my 3 choices for our cars...I just about went w/ the black in 19/20....and maybe after a few yrs, we will revisit it...but I like the look very much on our XF's...good job