Quote Originally Posted by Type R Positive View Post
If they fit on a civic, they damn well fit on a euro!
Just done some calculations for you Denot,
Stock tyre = 225/50x17. the correct replacements are:-

235/45x18......245/35x19

If you fit 225/40x18 the figures are

Standard revs per mile = 780 versus 804 for the 18"

speedo error would be 100kph standard versus 95kph for the 18"

so in reality if you fir 225/45x18 they are slightly too small.

hope that helps