235-60-15 on ralleye wheels fit on duster?

I have , I think- 7 in back. I dont have any 15" ralleyes yet for the front. Would it matter between 6 or 7 inch wide?

it may change the backspace, but really not enough to matter. here is a 15 x 7 with a 195/65/15 ,these wheels have a 4 " backspace... no rub what so ever