Thanks Guys,
Yeah it took me a while to do the math.
There's offset, backspacing & rim width to take into account.
Happy to report 265/70R17 on these rims sits fine
Eliminated rubbing on front guard inner liner on 3/4 lock
Eliminated rubbing on front sway bar on full lock
Traction control kicking in on full lock all but eliminated
Won't know what's it's like under flex until I get them all fitted and into the bush
Looks promising
(*needed to remove o'ring on discs and will need different wheel nuts too)