In talking with the mechanic about this, my understanding is the lug nuts for Budd rims are far less forgiving than hub-guide style. He says the inside part has to be torqued to 550 lb. and the outside between 550 and 650 lb. If the nuts get overtorqued, especially the inside part, they can spin in the hub, destroying the splines. Once that happens, it's nearly impossible to tighten them properly.
We have an outside tire company come in to check/replace tires. It's so easy to just rip the nuts on with the big air gun rather than snug them and then use the manual torque wrench. It's within reason to consider the tire guy spun the studs and then couldn't tighten them. It's also within reason to consider if that did happen, whoever did it wouldn't want to get in trouble and...what could possibly go wrong? So he didn't mention it.
Well, what could go wrong is since the nuts weren't tight, they wiggled and rattled enough to shear the heads and widen the holes in the hub. That goes on long enough, we get wheel separation.
I'll know more when I see the wheel assembly. I understand the whole thing is still together, with the brake drum still inside the rims. Not sure if it's clear in the picture, but the splines in the stud holes of the hub are spun nearly smooth.
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