15's are the best. putting the car on 15's with good rubber makes the car feel so much more responsive, especially if you can undersize the diameter of the tire to shorten the final gearing of the car.

i was going to run 225/50/15's on those wheels before i sold em to lookatme, if i still had em i'd probably run 225/45/15 toyo RA-1's on them and smile. but i decided that i didn't have room for 3 sets of wheels, so i stuck with the 17's and OEM wheels i had and decided that i was going to run 235's or 245's on the 17's.

if i was made otu of money i'd buy another set of 15's. probably 15x8 TE-37's and run 225/45/15's.