It’s not a single screw, the rear axle just lifts. The rear drive axle can be disengaged and picked up when it’s not needed.
Don’t forget it has a little bigger engine then USA truck. It’s a V8 and 770 HP and 2,729 torque. All that power would need bigger axles and frame rails I would think. Wouldn’t drivers in USA like to have that much power. They claim no DPF not sure about EGR. The engine seems to be a more then a couple years ahead in technology
That is crazy to me. If they’re just highway trucks why are they spec’d so heavy? My last truck I was right at 30k empty with a 1600cu ft Mac pneumatic and 30500 with a 72” side triple axle Timpte hopper. Blows my mind that a bobtail is only 6000 lighter than one of my old combos. Shoot, even the old 8 axle flatbeds I ran we’d be 35k empty and that was also packing stakes and bows and sides for our grain kit, on top of our regular flatbed gear. Truck alone was still lighter than 23k and it had a lift axle.