15" Rear tire sizes for Duster

went though this with 74 duster got 15x7 cop wheels put 255/60/15s on fit in wheels with room to spare but only 1/8 clearance from leaf to tire wheels have a 41/2 back space I recommend buying a wheel with a 4 back space 8 in wide and you can get a 255/ 60 or possibly a 275 under there