Offset and width of said wheels?
Regular tire size: 255/30 19
If you're low or want stretch: 245/30 19 or 235/30 19
Depending on how low you are, you could run a 20mm or larger spacer.
If you've got a friend with some spacers lying around try test-fitting the wheel with the various sizes to see how it will look.
You're definitely going to need spacers to clear the front suspension uprights with that offset. If its a narrow-body car then 20mm will be too big, but 10mm will probably work
Throw an Audi engineer down a hole with a ladder and he will fashion a shovel from it and tunnel his way out