Went from 215/85/16 to 245/75/16 and they kiss. I don't want a 1-3 inch spacer. Anywhere to get a say 1/2 inch spacer? Even 1" might be more than I want. I don't know how far I can go with stock lug nuts and if its even safe. I know most (all?) spacer typically have new/different lug nuts.

ebay, and you would be best off to measure the extra thread you currently have and that would tell you how wide of a spacer you can install and still have threads for your lug nuts.

http://cgi.ebay.com/ebaymotors/4-Wheel-Spacers-8-LUG-FOR-CHEVY-FORD-DUALLY-TRUCK-5-16_W0QQcmdZViewItemQQ_trksidZp4999Q2ec0Q2em14QQhas hZitem518c08a33cQQitemZ350241727292QQptZMotorsQ5fC arQ5fTruckQ5fPartsQ5fAccessories

EXCELLENT FIND, thanks, just what I was looking for. Big help.