im thinking of buying some slightly used 17 or 18 inch wheels with tires on them either off a newer maxima or a 350z, and saw that the 18s are wider (225/45/18 front, 245/45/18 rear). i need to know whether they will fit perfectly a 4th gen with no rubbing, and also what difference will it make if they are much wider than the stock ones (better/worse traction?) thanks.