What tyres size 225/40/18 or 225/45/18

[Scooby87]

What tyres size 225/40/18 or 225/45/18 for 2006 hawk eye RX
alloys are 18" i dont wanna put any lowering springs etc. but i wanna remove gap between the wheel arch and the wheel

 

[davelegacy]

40/18 is correct