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Old 2010-12-02, 01:51 PM   #18
AtomicLabMonkey
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Real Name: Austin
Join Date: Dec 2002
Location: Oshkosh, WI
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Car: '13 WRX
 
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Yeah, the weight load/cornering load/braking load/everything else load of the car is transferred from wheel to hub by friction at the flat flanges of the wheel & hub. The torque you put on the lug nuts generates thousands of pounds of axial force (preload) in each fastener, which generates a proportional amount of friction/clamp load in the plane of the hub flange to resist any external forces, and all of that essentially 'welds' everything together at the flange interface as a rigid assembly. Like Dean said, that center hub boss and corresponding inner bore of the wheel are probably not even touching once everything is torqued down.
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