Left vs right hand thread wheel studs.

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Bills65Dart

Bills65Dart

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Hello good people,

I read a few days ago about this left hand threads versus right hand threads on wheel studs. The person said the left hand thread studs should be used on the right side of the vehicle, and the right hand threaded studs on the left side of the vehicle. This was sort of the normal for it to have any purpose. But, today when getting new car tires on my car, instead of trailer tires, I discovered that the left hand threads was on the left side of the car. And the right hand threaded studs on the right side of the car.

Anyone have any knowledge about this ? I just felt a bit like, ... have someone switched them at some point, or is this how Dodge did it. Or is this fellow off in his thinking ?

If the left wheel had just a center bolt, and nut, it would be normal if the wheel spins forward to have a right hand threaded nut there to make it tighten itself, if you had a wrench on it all the time. But maybe life is not that simple. :)


Bill
 
left and right, describing a car does not work unless someone specifies thier point of view. drivers side / passenger side much better. left hand threads on the drivers side is correct
 
Nonsense. In the same era when my Mopars had LH thread, none of the wheels ever came loose. Neither did any of the Chivvies or Ferds that had all right hand thread.
 
kursplat said:
left and right, describing a car does not work unless someone specifies thier point of view. drivers side / passenger side much better. left hand threads on the drivers side is correct
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You for real? LEFT has always meant from the drivers point of view. Since Moby Dick was minnow! In 1974 I worked at a large repair shop. my boss hired a guy and his first assignment was to pull off the left fender off a 65 Mustang, He removes the passenger side. Said "When your facing the car, that is the left side" Fired on the spot, lasted 2hrs.
 
SGBARRACUDA said:
You for real? LEFT has always meant from the drivers point of view. Since Moby Dick was minnow! In 1974 I worked at a large repair shop. my boss hired a guy and his first assignment was to pull off the left fender off a 65 Mustang, He removes the passenger side. Said "When your facing the car, that is the left side" Fired on the spot, lasted 2hrs.
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awesome, looks like you proved my point
 
SGBARRACUDA said:
Your right , most people would twist two of them off before they realized they were left hand thread!
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Like the 65 Dart I had in Norway, one wheel had 4 bolts with left hand threads, and 1 with right hand thread, and the other wheel had 3 left hand treaded bolts and 2 right hand threaded bolts. It was a challenge. This time I will get it right. I need two nuts, and one right hand threaded stud, and one left hand threaded stud with larger knurl, if that is possible to find.

Bill
 
67Dart273 said:
Nonsense. In the same era when my Mopars had LH thread, none of the wheels ever came loose. Neither did any of the Chivvies or Ferds that had all right hand thread.
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Funny you mention that, in theory the left handed threads made sense, in reality, not so much. Strangely, IIRC Ford put left hand threads on the left rear only in the 1980's on their F350 pickups. The only reason I know is I worked at a tire store in the 90's, and had to deal with it enough to know. We occasionally would set up the new guys and watch them try to figure out why the left rear lugs would not come off. You could not let them try for too long, since they could over tighten the lugs, or stretch the threads.
 
On any vessel, be it car, truck, aircraft, boat, missile, train, wagon, etc... the left (port) side is the left side of the driver when he's facing forward. Right (starboard) side is always the right side of the driver when he's facing forward. For some reason I thought everybody knew this....
lights1d.jpg
 
Left/right always from the drivers seat looking forward.
 
Yep "port" is left side as seated in the drivers seat. I had a 68 charger w those damn LH studs. I knocked em out with a hammer and went to my local corner auto parts store and bought 10 RH studs. Did the same w a 69 charger I had a few years later.

My 67 cuda and my sons 69 cuda are getting upgraded to cordoba big brakes and BBP. Thankfully It appears Chrysler gave up on that L/H R/H horseshit in the early 70s. Saved me the trouble.
 
This should clear this up.
Look at your left hand, it should be on the end of your left arm.
Spin around a few times and stop in a different position. Look at the end of your left arm. Your left hand should still be on it ! Same would be true if you did this while on your head spinning. Left is always on the left and right is always on the right, unless I'm wrong !
 
69_340_GTS said:
...For some reason I thought everybody knew this....
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i used to think some things like this were true, but after preforming a lot of training at my work over the last few years, i've realized that assuming everyone in a conversation agrees on the basic facts creates a chance at killing someone.
consequently, i now need to be very careful, because i annoy the crap out of my wife :lol:
 
This thread is killing me!
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Bills65Dart said:
This was sort of the normal for it to have any purpose. But, today when getting new car tires on my car, instead of trailer tires, I discovered that the left hand threads was on the left side of the car. And the right hand threaded studs on the right side of the car.
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Yes its normal, and your thinking isn't screwed up.

Sometimes, but not always, there are markings on the nuts or the studs. Nuts will have a different color or line on them. Studs may have an L stamped on the head. One set of Crager closed nuts I have uses a different size hex for the lefties. They are easy to work with. All you have to do is run your clock backwards.
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upload_2019-7-26_11-14-58.png
 
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