18" rims problems??

I know that 17"s fit fine on the mx-3, but Im about to buy 18"s and I wanna make sure that i wont have any problems such as wheel rub etc. Keep in mind that i am also lowering at the point where i have no wheel gap (between the fender and the wheel). I also have a body kit.

-Please respond with your advice/answer

yeah 18s fit. But I would not go with much thinker than a 35 sidewall tire. Can you say rough ride?