Quote Originally Posted by ductape View Post
Porsche used an aluminum-magnesium alloy lug nut that had similar thermal expansion and contraction properties as the wheels in order to prevent loosening. They need to be replaced frequently. No problem for race cars, but one more little thing for every other owner to deal with.
Huh. The ones on my car were like 35 years old by the time I got rid of it. Oops.