hi mate
my front are 215/40-17 f1's gd3's
rears are 235 40 -17 f1-gd3 you might have to trim the kit slighly to stop catching or use proper suspension
my track day RL7's are all et.25 gpa fitment 8"x17" and these use 235-610-17 slicks/wets allround they dont catch but i have had the rear arches rolled and the kit trimmed back a bit
it's "not" the width thats the problem on the front it's profile of the tyres they catch the front bumper and the metal bit that holds the bumper
a 235/610-17 slick is virutaly the same as a 245-35-17 road tyre
marco