i have an r33 gtst 94 with gtr body kit looks great but bloody air dam is to low and i need to raise it say 10 mm to be really drivable . at moment are using 205/55 16 inch and want to go to 225/55 which will raise car up by 11mm it looks like it will i really need to know as car just brought and dealer will replace tyres as favour .

Your car is not available in the US so I don't have fitment info on it. I recommend checking other sites that focus on your car.