Dumb Question

[Mike1268]

Does anybody know a legitimate reason why the driver's side lug nuts are reverse thread?  Maybe something to do with oval track racing?

[70 sublime]

All mopars came like that from the factory in that era

[Mike1268]

O.K., but why?  There must be some reason behind it when no other manufacturer was doing it.

[BrianShaughnessy]

LH thread on driver's side didn't loosen up while driving.

[Mike1268]

So, from an engineering standpoint, nobody really knows for sure?  I've had many cars over the years with RH threads on the driver's side. Not one has loosened up on me.

[Nacho-RT74]

The wheels rotation “could get loose” the nuts on LH due is the same nuts loosening direction. Hence why were reversed.

I guess with years reanalized the milesimal chances that could happen specially getting the right torque on them make to despite that idea and got them corrected to the universal righti sense… saving from mistakes and uncomfort for owners and mechs. ( and assembly plant )

[b5blue]

Correct the wheel spin converts to torque on the lug nut which could conceivably reverse the nut off the lug. 

[6bblgt]

other manufacturers had LH lug nuts, they just gave up on the practice before Mopar did

[kent]

Last summer I stopped to help a women put her wheel back on her minivan. Her husband never torqued/tightened her lugs. It took her wheel around 15 miles to come off. I picked up 4 of the 5 lug nuts within 100 feet of each other. The look on her face. I would have hated to be her husband. Who was on the way.
The rotation will aid in them coming off if not tightened/torqued properly.

[John_Kunkel]

https://www.youtube.com/watch?v=jXxulZvCt_M

[Mike1268]

Thank You.  The video explained a lot!

[XH29N0G]

Glad it is sorted.

I found out the hard way that improperly torqued RH lugnuts and bolts can back out on the drivers side.

[b5blue]

65lb is proper torque.