will these alloys fit
 

im thinking of getting some new alloys for my girlfreinds fiesta zetec-s mk6, i want either 16 or 17inch, but what offset will fit this car, and is tehre anything else that will stop them from fitting on properly and make them stick out the arches, the car is the aniversary edition in yellow with the checkerd black roof so im thinking gloss black ones, any suggestions on what type of wheels would be good, bearing in mind im not rich :-)

Sounds like they are the wrong offset. Modern Fords require a minimum of ET42, ET50 is recommended. It should be stamped somewhere inside the wheel.

It will make it handle like shit and will accelerate wear on the wheel bearings. If the tread of the tyre is not covered by the arch then it is illegal.

IMO, sell them and get some wheels that fit properly.