Originally Posted by Madanio24
That happened to me with my stock tires. Apparently I didn't tighten the rims enough and over time the bolts got loose and allowed the rim to wobble. One bolt with stud snapped completely off and when I eventually pulled over I was able to hand turn the other in tact bolts by hand. The stud was the only thing that had to be replaced. Pretty scary since I was going 75 mpg and I had exactly the same grinding noise you had.
It was probably not an overtorque situation, you would be supprised my 1/2" impact is/was top of the line when I got it 3-4 years ago, and shortly after I got it I was one of the few that could break a stud (if a lug was seized onto the stud, best way to get it off is to have at it till it breaks then replace the stud). That said even with my gun it takes 10 seconds of all shes got to break the stud, there is not a single person I know that does anything mechanical for a living that has a gun powerful enough to do that that is dumb enough to run any lug nut in like that.
The story clearly stated there was some noise, AKA the wheel was likely wobbling. wobbling wheel with large heavy M/T (hell even stock wheels) = broken studs.