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Any merit to this theory in addition to contamination/cross trheading?
- When removing the wheels by hand, some (all) weight is left on the wheel so it won't just spin when trying to "crack loose" the lugs.
- lugs are loosened just a bit too much, and the hub-centering doesn't hold the weight (car on a slight angle, etc)
- Last lug as it's turned has all the weight of that corner on it. It's side-loaded and the threads get galled.
- Corner is jacked up to remove wheel now that the lugs are not at 90 ft-lbs, but the some damage is done.
Now throw in some grit and or the bits of metal that come off the galled threads as the lug nut is worked on/off... ?
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