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Old 11-24-2020, 02:21 PM   #31
fraz
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Originally Posted by ScottRNelson View Post
According to this guy: https://www.youtube.com/watch?v=jXxulZvCt_M

Chrysler was the last holdout to have reverse threads on the left side lug nuts. They were gone by 1975. He explains how it was a holdover from horse drawn carriages with a single center nut holding the wheel on. Can't find anywhere noting when all of the other car manufacturers switched, but quite a few other brands had them in the 50's.
My 69 Alfa Romeo Spider had LH lugs on left side. I think they kept doing this well into the 70's.
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Old 11-24-2020, 03:20 PM   #32
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you actually need four different configurations due to front & rear wheels having torque in opposite directions.

Most modern centerloc wheels have pins to prevent drive/braking torque from rotating wheel relative to hub anyway.


Last edited by DannoXYZ; 11-24-2020 at 03:25 PM..
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Old 11-24-2020, 08:03 PM   #33
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Originally Posted by ScottRNelson View Post
According to this guy: https://www.youtube.com/watch?v=jXxulZvCt_M

Chrysler was the last holdout to have reverse threads on the left side lug nuts. They were gone by 1975. He explains how it was a holdover from horse drawn carriages with a single center nut holding the wheel on. Can't find anywhere noting when all of the other car manufacturers switched, but quite a few other brands had them in the 50's.
Yes!

I remember when I got some NOS Cragars for my early 60's MoPar. Took quite a while to find a company that had the correct nuts in LH. The issue was that the A-bodies used fairly small nuts too. Then for years - no problem. Then some dufus at a tire place used an impact wrench and bolloxed up all five studs on one LH wheel. The LH studs by that point were almost impossible to obtain.

So I had one wheel that was LH threads, and three wheels that were RH thread.

I learned to mark the wheels with masking tape before taking the car to tire places after that.
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