Its going to be tight with that width and offset. You may need to mount smaller tires than those wheels come with on the S5 - probably 235 35 19 max, in order to clear the arches. I tried 245s on 8.5" rims with ET40 and they were very close but didn't touch.
Oh, and you will need spigot rings to reduce the centre bore to 57.1
It will ride like **** with such a tiny tire but I'm sure you know that