Tire Size For a 1974 Plymouth Scamp

K went with a 235 60 fits perfect, still gots the wide look too. So now I have two good 255 60 15 tires, if any one lives around phoenix or tucson and wants a good deal on some tires let me know. Thanks again for everyone's help.
I stretched my tubs using 2 x 4s 16'' long, braced them against the frame and drove them puppies in. of course I was changing both rear quarters when I did this. I now have 11'' tires under mine spinning a 373 ford 8.8 rear end that has been cut down on one side.