if want practicality, stay standard....
somehow when you start to change stuffs, it'll never end...
obviously when you have 17"s , 100% you'll be wondering if i've gotten 18"s, it would've look nicer.....then after kena racun somemore, sell 17"s get 18"s. lagi waste money.....
anyways, if for 318i, 18"s the max, one should go, so i'm satisfied.