17's or 18's with lowered suspension ?

hey now im in the process of buying new rims, i originally had 17 inch chrome ferretti palmeros. Now im lookin at 18's or back to 17's, only prob is I dont want to buy too big and have rubbage when I turn, my car is running on kyb agx shocks and struts and is lowered, any opinions on what size i should go with? I know theres a tutorial on this but all different opinions help out -
heres a link to the rims, these will look mean on a black galant

http://cgi.ebay.com/ebaymotors/ws/eB...228011397&rd=1

any advice on a good tires size, i used to go with 205/40/17:smt031

225/40/18, you wont rub if the offset is right.

I like 17s myself on a 7g. 18s seem too big, lifts the car off the ground too much.

oops i didn't realize this was in 7g section, i have no idea, disregard my first post.

depends what you want to go for, i have 18x8's with 40 series tire. For performance lighter weight would put the 17's at an advantage.

go 18, trust me , i bought 17 s and i regreted it sooooooooooo bad. u wont rubbed at all wit 18s, have a 1.5in drop wit 18on 225-40-18