....d00d...here it is ........the STi really should have a 235/45 from the factory....there has been some proof(GPS) that the speedo reads 'off' by just about exactly the difference between a 225/45 and a 235/45.....SOOOOOooooooooo.....the STi, with it's gearing and power can use a taller tire to achieve a bit 'better' bearing.....and just the opposite is true for a WRX....which can benefit(IMO) from a 'shorter tire"