^that might be because you dont have to worry about that kinda thing
big horsepower is nothing new, just seems like a hotrod guy got ahold of a JK is all...
sand dunes may need that kinda of raw power but not the tires... rocks might need that kind of tire but not necessarily that much power... that thing wouldnt be able to do 140 on the road for catching air and flipping over (i watch another video where he is htorodding in the parking lot and all is okay straight line but he turned slightly once driver and the driver tire lifted off the ground... scary.)
...and those wheels are only needed for shows... they have no other purpose... and dont look all that great either.