Instead of begging for it try and learn how to do it yourself. If you get stuck someone can assist you. It isn’t that hard to look up tutorials on YouTube for blender. And the wiki shows you how to jbeam.
I love it when people beg/demand something to be done, and someone else explains to them why it cant happen because it requires skill/experience, then that person says the same thing but its directed to "someone with experience" lol braindead
To do this you will have to make a custom wheel setup for your vehicle. Once you do, you will just want to change the number of rays of that wheel down to either 4 or 2 (in old RoR code the nodes on the wheels were paralel, so 4 would work, but I believe that the wheels here are staggered so you would probably need 2 to make a square) and if the game doesn't crash from such a silly idea, presto... square wheels. If the game does crash, then you need to make your own square wheels and turn them with rotators.
I know I’m responding to a nearly 3 year old thread here, but since it somehow is now relatively active I may as well throw my opinion in. I’ve actually never understood why the official game doesn’t have square wheels. As linked in the OP, Mythbusters famously had some success doing it on a fullsize truck (*cough* not unlike a D-Series, one of the few vehicles in game in 2012) in an episode that aired around the time the first videos of BeamNG were put on YouTube. For a physics sim, it seems like an obvious “here’s a stupid toy to play with” idea.
TBH I've always wanted more MB configs and parts in BeamNG. The Ramp-Plow and JATO bus we're good starters and there are still more like backwards Porsche and the OG MB JATO car, as well the little things like square wheels and the "Corvette ramp-car" (of course with Beam's equivalrnts for the cars). Who knows? Maybe it might come. That would be cool though, just saying.
i can make a model and export it to jbeam but then I have no idea how to implement onto a truck the model would just be a square and not have a very wheely texture