275/45R16 on the back and 225/55R16 on the front. There is nothing remotely practical about this setup, but these things ride like silk and stick to the road like glue. Heavy rain....maybe not so much. They look really good on the Outback too.
I recently put 18's on mine and really the ride is barely more rough than the 16's I took off. I'll take some pics tomorrow so you can see the offset but I think they turned out awesome.