Wheels

From The Wiki

Standard Wheels:

Size: 17x7 (17 Inch diameter, 7 Inches wide)

Offset: +55 (+55 mm See wikipedia)

Stud Pattern or PCD: 5x100 (5 studs, 100mm Bolt Circle See wikipedia)

Rubber: 225/45R17 Dunlop SP Sport 1 Summer Performance Tire

STi 5 spoke:

Size: 18x8"

Offset: +55

Stud Pattern: 5x114.3

It's interesting that the normal WRX uses a metric PCD but the STi uses an imperial one. Perhaps it's just to stop people interchanging wheels.