you can do a 235/35 19 40mm offset if you do a coil over conversion. without the coil overs you can do a 225/40 18 40-42 mm offset

I have the axis se7en 19x8's on my cougar and have a set of 18x7.5 alba blazes on my girlfriends contour. i have her car dropped 2.5" and rub occasionally in the front when the roads are really bumpy. i am gonna crank it back up to a 1.75" drop and she will be fine with zero rubing. it never rubs in the rear