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I hate to disagree but many many different marques have left hand and right
hand threads for the wheel attachments, particularly if the car has knock on
spinners for wire wheels.
In this case I am generally talking about pre war european sporting and
luxury cars, having little knowledge of american cars other than Chrysler and
Hudson (whose chassis formed the basis of the Railton and the Brough Superior in
the UK.
The reason that wheels have left and right hand threads is very simple, the
rotation of the wheel creates a centrifugal force on the wheel attachment and by
having the different threads both have a tightening effect, have the same
thread on all wheels and there is a potential to loose a wheel, much less likely
with bolt on wheels, but I have seen a race where one car had its half shafts
and therefore hubs reversed and as a result lost both rear wheels... they were
KO wire wheels where as I said before it is more critical.
So Chrysler did it not for the sake of being different but because it was
the correct thing to do from an enginering point of view.
Regards
Nigel Plant
1929 L*80 Convertible Coupe by
Locke
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