I have 18" American Racing , Ramblers, Front 245/45x18 and rear 285/40x18, I did have to adjust my fender wells in front to stop the rear of the front tire rubbing when fully turned. But with the Nitto tires , i have not even had a squeel out of them.
https://www.facebook.com/photo.php?f...7520000&type=3
This is 16" wheels 255 rear and 215 front....before I rebuilt the whole car in 2018, also switched from RHD to LHD, and added power steering.
https://www.facebook.com/photo/?fbid...56.-2207520000
The 18" tires are also 27" in in O/D, so with a 2.88 rear the gearing is very freeway friendly. They also fill the wheel well perfectly.