18's are possible....if you put enough into suspension it'll fit without rubbing (most people cheap out on it though) 18's without a kit looks tooo weird, a body kit helps hide the huge size of the rims. Pot holes are a factory regardless what size wheels you're runnin'.....if you're smart, you'll have insurance coverage on your larger wheels like myself. I bend one, do a curb check, or blow a tire im covered. Just be smart about it, dont do a rediculous drop if you plan on driving it daily, and dont be cheap about it or you'll regret it (just my 2 cents)