Left hand lug nuts are back, baby!
You can actually prove it yourself.
If you have a car with LH nuts on the DS, next time you put a wheel on, just finger tighten the nuts.
The wheel will not come off.
Try that with RH nuts on the DS.
The wheel will be off sometime around the second or third corner you go around and will likely be wobbling before that.
The wheel won’t come off huh? You don’t think the wheel wobbling around on the studs won’t break them? Maybe the nuts won’t loosen further, but you’re sadly mistaken if you think finger tight lug nuts won’t cause other problems up to and including catastrophic failure.
Or you can just tighten your lug nuts like you’re supposed to and never have an issue. Like the millions and millions of cars on the road that don't use LH threads.
If it was actually a problem you can bet your *** someone would have started a class action lawsuit over it. Even if it was an exceedingly
minor problem some lawyer would have jumped all over it by now. Yeah, for a spindle mounted wheel with a single nut or knock off at the center of the axle it can be an issue. For a multi-lug pattern that’s off the center of the axle it accomplishes nothing that properly torqued lug nuts doesn’t already accomplish. Which is why pretty much no one has done it since Chrysler in the 70’s. And most everyone else well before that because Chrysler was one of the last hold outs.
And yes, there have been studies done on this. If the lug nuts are loose they can continue to loosen on the left side of the car with right hand threads. But if the lug nuts are tight they won't loosen because of the rotation of the wheel. And loose lug nuts cause other issues that can cause failure.
Some will never get it.....
It was a safety device & if it saved one life or accident, it was worth it. LH thread on left side tends to self tighten....& keep the wheel on.
I do believe there were others that used the LH threads. VW?
Well that's a slippery slope isn't it? By that logic every vehicle made should have a breathalyzer interlock, you'd save hundreds of thousands of lives preventing drunk driving. Or maybe every car should come with a GPS tied governor so you can't ever exceed the posted speed limit? Distance sensors that prevent you from tailgating? Oh, wait, self driving cars have already been proven to be safer per mile than the average driver (not 100% safe, but safer than the average human) so we should probably just make all cars self driving. And of course in all of these scenarios banning older vehicles would be necessary, because I'm sure there's many lives that have been lost when a classic was involved in an accident that wouldn't have been fatal in a modern vehicle.
Properly torque your lug nuts and it will never be an issue.
