Nine width rim but the tire and offset would accomodate. You're running a 18x7.5 front +40 with a 15 mm spacer correct? So in essence, you are running a 7.5 width rim +25 in the front? I was suggesting why not a 9 with rim with possibly a +38 offset which is similar if not the case. Of course, you'd have to compensate some with camber and tire sizing. Sorry, I didn't know your car doesn't have power steering.