And that contributed how?

 

The entire thread isn't relevant, OP never got his answer. I didn't either, had to go elsewhere. Which, to contribute, no the stock radius lug nuts are not the correct for a wheel that calls for a 60 degree taper.

Edit: o look, nevermind, hootie said that exact same thing, it was just buried in crap.

 

That's pretty much common knowledge, and was answered almost immediately.

For emotional appeal, the guy who bought my EF put the stock lugs on his aftermarket wheels and snapped a wheel stud.