handling car 17's or 15's?

yep been nosing aroung here for awhile thought id join now... reason im looken for wheels now is im going to chop my rear axle and want to fit the wheel/tire combo in the tub and measure the distance...

and yes there are more options in those sizes because new vehicles are coming out with bigger and bigger wheels.. even most trucks use 17's or bigger now 15's r becoming rare