Alxls1

Hi guy i would like to buy a set of sport stars 15 wheels from jegs. Just want a street friendly set up for dd. i have the stock rear end and want to go with this set up: for the rear 15x8 5.5 back spacing and a 275 50 15 mt drag radial, front 15x7 4.00 back spacing and a 205 60 r 15 continental pro contact eco plus tire what do you guys think?? Do i need to narrow my rear end? Or its just fine? Thanks in advance