Did you have any problems with the rears, when I put the 18's on the rear the wheel bolts where too long and fouling the rear brakes, I ended up buying new bolts for the rear, ahs anyone had this problem before.
weird, i took my 17`s off and the 18`s went straight on!, had to bend back the rear arch slightly as i couldnt afford to change the 265 tyres on the back!
n3thn, wrong offset is the only thing i could think of!