what size tires should I use?

I have recently upgraded to 18 inch wheels for my '99 Eclipse GS-T and may lower it also..I'm wondering if anyone could help me determine which size of 18 inch tires should I use on these wheels so that they don't rub on anything..Would 215/35/18's work or should I go with 205/40/18's? Anyone running 18's on a 2g GS-T please help.

YOU SHOULD GO WITH 215/35 IF YOU LOWER THE CAR.
MY CAR I HAVENT LOWER IT AND IM GOING TO PUT 225/40/18

MY FRIEND HAS THE SAME CAR AND HE HAS NOT DROP IT AND IT LOOKS VERY NICE WITH 225/40/18