Will these tire sizes work?

[Johnny Fort]

I had 16 X 7 pony rims with 245/50/16 at all four corners and they rubbed a little in the front with the eibachs. I rolled the fender lip in a tiny bit in front and that helped a lot. They would still rub when reversing with the wheel turned hard.

I now have 17 X 8 saleen rims with 235/45/17s up front and 245/45s in back. They hardly ever rub, much less than before. The 235s barely look different than the 245s so that isn't an issue (the 245s have a overall diameter of 25.68 inches while the 235s have a diameter of 25.33 inches, if you can notice 0.35 inches, you're amazing). Go with 245s all around if you want to be able to rotate the tires.

I can't stress this enough, get 17s! You'll regret 16s till the day you die. You'll soon enough want the 17s anyway and wish you had gotten them before. Besides, 16" Cobra Rs look silly. Personally I think the 5-lug Ford manufactured Rs look nicer so if you're in the market to convert to rear-disk or 5-lug for some reason, I would do that. But that's just me. The 4-lug Rs look good too.