15 X 8 with 4.5 backspace on my new axles with disc conversion. I didn't measure the rotor face to face before I mounted the wheels but if anybody wants that measurement I'd be happy to do it. I'm not sure how much that number changed. I do, however, have to roll the passenger wheel well lip but that's mostly due to my new wheels not having the 5 inch backspace of my old wheels. Couldn't find cop wheels with 5 inch back space and didn't have time to mess around with getting some made.
