The extra axles add about 3000 pounds at most. The shipper only loads between 85,000-89,000 on the truck, so the gross always comes up short. It's their bundle weight that prevents them from maximizing the load weight. Most are either 4700 or 8800 pounds. I got 10 bundles, all 8,800 lbs.
Lugnuts if they are the correct ones,you should see 1/4" and over of thread. Aluminum rims are thicker then steel ones. These things are suppose to be torqued checked after your impact,a rule! Yes, use your leather gloves and check all of them clockwise,like if you were to try and unscrew them. Check in between tires. Mechanics are responsible for these checks,should be a record of it on file. I blame the shop foreman for not checking his crew. Get Out And Look, G.O.A.L.
Well, you can still put more weight on it. It's just that the added weight per axle decreases greatly as you add more. But I get yer drift and gotta agree.... course, it'd be kinda nuts having a 4 axle group and 68k on em. Those coil haulers in Detroit who haul to the car plants gotta have some crazy axle weights though....
If the hub didn't have a transparent front I could agree, but not in the case of a leaking wheel seal which would sling oil all over the inside of the tires.
My cousin was an old school steel hauler out of Pittsburgh. He tells stories of mind boggling weights and dimensions, that everyone pulled, especially after the sun went down.