What's been said several times ... ~ "there never should have been lock-washers on wheels." Those are better suited to clamping soft materials (wood, etc), or when application torque is well shy of a bolt's maximum capacity and no side-loading is to be expected.
Doesn't this go back to what the dealer or distributor did wrong, by assembling with lock vs flat washers? btw, I might go as high as 220 ft/lb when tightening these, but I'd be quite surprised to find that 160 ft/lb wouldn't do with proper parts installed.
I'd do the post-install re-torque (re-check) on these more than once, esp if holes might be burred-up much. :2cents:.