18 x 9 +30 would have the looks, but you'd definitely have to under tyre the front and/or roll your front guards
I currently run a 17 x 9 +20 all round on my R33 with only 235/45's and I have to roll all the guards, but as you can see I do have almost maximum dish
Thats definitely true, as I have especially gone for a set of rims that were off a GTR or Z32 for maximum brake clearance or yo can custom order rims depending on application for extra $$$.