I have 15x7 wheels on my 69. I am running 235/70/15 on the rear right now and want too keep close too the same tire height. I dont know what my backspace is, but with the ideal backspace, what would bet the widest tire these wheels will take or that will fit in my wheel well. I dont want too roll the fenders.

a 275/60/15 will fit nicely on the 15x7, should have plenty of room, and be nearly the same height as your 235/70 :cool: Here's a pic of my old setup

See this post for a pic (http://www.chevelles.com/forum/ultimatebb.php?ubb=get_topic;f=8;t=001674)