Wow, Yeah 0.6 inch gain in diameter costs 4lbs - that's strange since they are both C rated tires. In hindsight the 285/75/17 may have been the better choice. Oh well, not changing them now!
The Toyos are 35x11.5, the K02s were 285/70/17. I made the move to get the increased diameter (34.5 Toyo vs 32.8 inches KO2 ). Didn't want to go to 315 70/17 (sasquatch) as that would have likely required new rims as well.
I put 35x11.5 Toyo Open Country AT3 (Load Range C) Tires on my stock Badlands yesterday, and happy to say they fit just fine with plenty of room left for Upper control arm clearance and vertical travel (maybe not rock crawling). No Lift. I did at 6MM KSP Disc Spacers just for a little more...