Fat Tires ....help..

So I am looking to finally change my rear wheels. I have stock GT bullit rims right now...I want to get either 17x10s or 18x10s with a tall and wide tire. I do not want 45s...I was thinking either 260/55s or 255/60s sort of the look of my 1969. Anyone have their car with fat n wide tires in the rear I would really like to see what it looks like before I buy them!! OPINIONS??