Lug Nut Torque Spec

Getting new wheels and tires tomorrow and was wanting to know the torque spec for aluminum slot mag (new US Mag Wheels) wheels. I'm guessing around 70 lbs but want to be sure so I don't under torque or over torque them.

 

I'm thinking, but not positive, that our CJ-7s have 1/2" wheel studs. If that is indeed the case, I think I would go with 80 ft. lb. 70 would probably be good with 7/16" studs.

The only way to know for sure though, is shoot the question to the wheel manufacturer.

 

I put the same wheels on mine. I found that the studs where a little short after I mounted the wheels, they only turned on just a few turns because the hub area on the wheel is about an inch thick from what I remember. I found some lugnuts that have a shank that goes further into the hole and they seemed a lot more secure. I bought them about 2 years ago so I would have to do some digging through receipts/websites to find them. They came from a website called Mr. Lugnuts, or Lugnuts are us, something like that. Yes, 1/2 inch studs.

 

I think they were from a website called The Wheel Group, Mr. Lugnut, and they were called Closed End ET Bulge. You will see the shank in the drawing description.

 

Aluminum wheels typically have a thicker flange than steel wheels. It's likely a longer stud is required.
I had to change mine when I installed my slots. Dorman has a big selection depending on your hub type and brake type.
For a 1/2" stud, you should have 1/2" protrusion after nut installation.
As an absolute minimum, two threads should protrude after nut installation.

 

When I upgraded my front brakes to disc brakes, I found I also needed longer studs because of my aluminum wheels. I went onto the Dorman website and found wheel studs P/N 610-219.1 gave me the added length that I needed for proper installation.