demisions on 04 escalade wheels

im looking for offset, backspacing...........trying to decide whether to go with a 205/40/17 or a 195/40/17 trying to get as much room as i can without running 4x4 sheet metal

and oh yes continental and yokohoma both make a 195/40/17

pretty much everyone runs 205/40s

205/40/17 works nice without 4x4 metal

wILL 215/40S FIT?