How does this happen?

Man id have used the grapple to toss the wheels ontop the pile and got the heck out of there asap. Fix it at the mill or back of an industrial park or something instead of sitting there waiting for a OOS and insurance hike.

 

FoolsErrand: that would’ve been funny to watch.

Using the grapple to pickup the tires and drum onto the pile.

 

All the causes of rust/Corrosion and not getting them tight enough have been already mentioned.
2 more causes are.
1)past service involved ugga dugga dugga overtightening of the assembly resulting in stud stretch. Then when you go back later for any service and retourque to spec the RIGHT way results in it still being loose. Studs and/or nuts are now weak and won’t hold clamp pressure because of it.
2)wheel was rammed on with the ugga duggas before it actually seated fully on the hub so it eventually works loose no matter how tight it is.

 

Yeah theres no going back once a fastener exceeds its tensile yield.

 

They all think you need a 1 inch gun with 2000 lbs to tighten them

 

Brettj3876: They want to make sure we are returning customers when we can’t get the wheel off of our personal vehicles.

Then charge us for broken studs when we are looking the other way.

 

Look at the rim and tire. He has curbed that wheel and that's when things started breaking.