Hankooks are square shouldered so if you don't have the proper offset (+45 is not high enough in the rear), then you'll have to run a stock size tire (245). This would be fine on a stock width rim, but there's no point to buying a wider rim if you can't also go with a wider tire. Get a higher offset and you can do 255s - but the Hankooks may still occassionally rub. That's easy to fix with a very slight fender roll.
135i, SGM, Coral, Sport Package, Auto, Premium Hifi, USB/ipod, Apex EC-7s, PPK Stage II