Underside
Remove 8 screws, the shocks, and the 4 diff lock arms to separate the driveline from chassis
M2.5 hex head to remove the hub covers
This allows access to the standard m4 size nut that holds the wheel on
I also noticed that on the rear wheels the nut bottoms out on the shaft before the rim. Leaving the wheel a little loose. I will have to shim it.
Back side of a wheel. What a nightmare it would be if you had to remove 10 m2 nuts to get each wheel off!