16x7 wheels, 40 offset. 225/50R16's fit perfectly (most list 7" as the designed wheel width) - they are wider than typical OEM tires, which are sized for all-season tires to work in rain, snow, and dirt, but they're not that wide for performance tires (Evos run 235's from the factory, and are the same weight of car).
They're also pretty inexpensive with a lot of performance summer tires to choose from, since they are a common size on late 90's/Early 2000's European cars (Rear tires on Porsche and BMW's), and also a common size for mid 90's sports cars like Mk III Supras and RX7 FD's.