Ahh! Reverse Treads?!!?

[Patrick]

I think there supposed to stop the wheel nut from coming loose.
The way the wheel turns while driving should tighten the nut instead of loosening. That's why it's only on one side off the car.
I've never had a problem with standard thread nut's on my cars though.

I could be worse though, 2 other apprentices at work snapped a turbo impeller shaft, because off reverse thread.