haha - right intention, wrong figure.
4x108mm is the bolt pattern, offset refers to how much additional rim width from the centerline (face of rim that touches brake rotor)... positive offset sticks more rim out past the rotor, negative offset sucks the wheel rim in toward the brakes (I hope I don't have this backwards)
FWD cars have a negative offset, usually around 35-40mm. Contours and Focii run a larger amount of offset, in the 40-50mm range.
Rob
P.S. Perry, I havent forgot about the zetec contour intake - the custom filter arrived thursday (one that's the right diameter to fit directly onto the MAF).