Hello mate

ive got a set of TSW Imola's on my MK3 cabby, which came off a sierra, they went straight on (well when i say straight on what i really mean is i had to grind both the back arches out ) but this is fairly normal, won't be as bad on a MK4 though

If your still a bit unsure, go onto somewhere like rochford tyres website and they have wheel charts showing all the offset figures and so forth for loads of cars.

The wheels you are after should be PCD 108 and ET35 - ET45 offset. Most manufacturers have the same characteristics throughout the different models.

My wheels just for reference were ET35, ET45 will rub less on outer arches but it then raises the chance of rubbing on the inner arch.

Hope this helps?