Help fitting wheels

Need some help, I’ve got my stock s4 b8.5 wheels (18") with my winter tires on them. I want to put them on my daily driver : 2007 Passat (s4 is sold, TTS is staying warm this winter). Where do I start to figure out what hardware I need and if they will fit?

Anyone? I have the stock bolt hardware could I just out those through the rim (not to hub) and mark where they come out, then put into hub and tighten up to the mark?

Confused? bolt it on to the passat and see where it sits.

I am assuming the bolt pattern is same, 5x112. Your s4 was a 66.6 bore iirc. Only thing left is hub centering rings if different hub bore and quite possibly spacers depending on offset, strut and fender clearance. Should be good to go. Maybe need shorter or longer lugs based on passat hub if they are interfering.

Yeah the lugs was my main concern, not if it pokes or is flush.