Left hand lug nuts are back, baby!

69_340_GTS said
In NASCAR Cup, all 4 corners of the car have (single) left-hand threads on the hubs/nuts. There are 6 drive pins on the hub, and 18 drive pin holes in the wheels. The wheel can't spin, or come loose, if the pins are engaged and the nut is tight. But nobody seems to know why they are using left-hand threads on all 4 corners.
Click to expand...

Probably because they actually did the math, the wheel guns are calibrated to provide exactly the right torque spec, and when properly torqued the psi on the nut will be more than enough to resist the small force exerted on the nut by the rotation of the wheel.