RV wheels... on fifth wheels are subject to side stress and such. The wheels are “lug centered”... not hub centered. Proper follow up with a torque wrench set to correct value depending on if those are 1/2 or 9/16 studs would most likely have prevented the lug bolts from being sheared off...
Once is 3 years with a torque wrench just isn’t gonna get it... YMMV
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