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Old 2004-04-26, 12:58 PM   #13
AtomicLabMonkey
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Real Name: Austin
Join Date: Dec 2002
Location: Oshkosh, WI
Posts: 4,063
 
Car: '13 WRX
 
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Quote:
Originally Posted by Dean
I actually had loose lug nuts, as well as riding in a Student's car at Sears Point with them. They are not a big thing to worry about, especially on cars with hubcentric wheels like the Subys as they give a ton of warning.
:shock: I have to disagree there, untorqued lugnuts are a good way to break the wheel studs and have a wheel go flying at speed. Lugnuts have a high torque value for a good reason (and the reason is not to just keep them from loosening) - that high torque value imparts a preload on the studs, and consequently a clamping (frictional) force between the flat surfaces of the wheel, rotor and hub. That clamping force is what resists all the static & dynamic wheel loads, rather than the studs alone supporting the outside loadings as simple shear pins; if the clamping force isn't there, the studs are going to take a cyclical beating every time the wheel goes around and stand a good chance of failing from fatigue.
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