GT350R - Aftermerket Wheel Lug Nut Solution

[Tomster]

The nut material would indeed have little impact. It is only the first few threads of the nut doing the bulk of the work anyway. The issue is, as was mentioned are the variables. "Lubricants" can vary wildly. Note what happens when anti-seize is used.




And here's a good one with respect to torque, "an indirect indication of tension." It is tension that causes the bolt to stretch and thus provide clamp force. And the biggest variable is indeed K which is exactly what we've been discussing.

Your caliperfexion studs are a good example. You provide the ARP and a recommended torque value. Well done.

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[JR369]

Same. Just the threads of the studs. I went thin, but completely coated and even. As the nut threads on, it’ll pick up in the threads, spread around evenly, and do what it needs to do.

lightly lubricate the threads is all that is required. Some lube. More wont hurt except make a mess, but it has to be lubed.

Thanks guys. I got a bottle of ARP today.

 

[oldbmwfan]

The nut material would indeed have little impact. It is only the first few threads of the nut doing the bulk of the work anyway. The issue is, as was mentioned are the variables. "Lubricants" can vary wildly. Note what happens when anti-seize is used.


And here's a good one with respect to torque, "an indirect indication of tension." It is tension that causes the bolt to stretch and thus provide clamp force. And the biggest variable is indeed K which is exactly what we've been discussing.

Good info. That second video would seem to suggest that counting turns of the nut is the best way to approximate in the absence of all knowledge. Seems like that's doable by anyone as a calibration point.

 

[Tomster]

Good info. That second video would seem to suggest that counting turns of the nut is the best way to approximate in the absence of all knowledge. Seems like that's doable by anyone as a calibration point.

Yes, that's brilliant. Great idea Tob!

 

[galaxy]

Is it plausible that someone with clean dry threads then could see what it takes in number of turns and then do a comparison to us with already greased threads and see where it ends up? I know we are still dealing with variables (wrench, lube used, etc), but may leave you closer than guessing at a 10-30% reduction.

 

[Tomster]

Is it plausible that someone with clean dry threads then could see what it takes in number of turns and then do a comparison to us with already greased threads and see where it ends up? I know we are still dealing with variables (wrench, lube used, etc), but may leave you closer than guessing at a 10-30% reduction.

That is exactly what I plan to do Jon. Just starting a 4 day trip. I will report my results when I get back

 

[50 Deep]

Look at all those nuts....... shipping Monday!

 

[JR369]

Look at all those nuts....... shipping Monday!

 

[Tomster]

Well.... I completed an interesting experiment based upon @Epiphany 's epiphany. I loosened a dry stock lug nut on my CF wheel and retightened to hand tight. I used my new(er) torque wrench to tighten the lug nut to 135 ft/lbs. The amount it had to turn was 90 degrees. I repeated the experiment 3 times and consistently came up with 90 degrees of travel before the torque wrench clicked at 135 ft/lbs.

I went to the signature wheel with titanium lug nuts and repeated as above. I ensured that the threads were lubed and found that it only took 45 degrees of rotation before the torque wrench clicked at 135 ft/lbs. I repeated 3 times and found the result to be consistent.

You would think that the lug/stud with ARP would turn more with ARP lube on it to reach the 135 ft/lbs. NOPE.

Anyone have any other ideas? Is it safe to say that 135 ft/lbs measured on the torque wrench with TI lugs on steel studs with ARP lube is accurate and equivalent to a dry stud and lug?

 

[galaxy]

You would think that the lug/stud with ARP would turn more with ARP lube on it to reach the 135 ft/lbs.

Actually no, I would not think that. That makes sense. At least in my brain, the grease takes up space in the threads, thus it makes sense the torque would be reached in fewer turns.

Is it safe to say that 135 ft/lbs measured on the torque wrench with TI lugs on steel studs with ARP lube is accurate and equivalent to a dry stud and lug?

Torque is the same, yes, but clamping force may not be.

 

[Tomster]

Actually no, I would not think that. That makes sense. At least in my brain, the grease takes up space in the threads, thus it makes sense the torque would be reached in fewer turns.



Torque is the same, yes, but clamping force may not be.

I used a breaker bar and attempted to turn the TI ARP lubed lug to 90 degrees of travel that the dry lug on dry stud allowed to reach torque. It was very obvious real quick that there was no way that TI lug with ARP was going to make it without something breaking. Nope, I think the lesson I learned is that I will torque them to 135 ft/lbs and leave them on street duty until (cough) someone gets the test data to demonstrate proper preload torque.

 

[JR369]

Hmm. I wonder if you get more of a spreading effect on the CF wheel vs the Sig wheel? Where the Lugnut on the CF wheel spreads the hole a little more vs the Sig wheel.

 

[Tomster]

Hmm. I wonder if you get more of a spreading effect on the CF wheel vs the Sig wheel? Where the Lugnut on the CF wheel spreads the hole a little more vs the Sig wheel.

in theory, it should be the same amount of turns. Same conical lug offset, same thread pitch. I don't know, but I was very uncomfortable going 90 degrees on the TI lugs with the amount of force I was using.

 

[Zeromaz]

Damnit.... T, plan on getting more done eventually?

 

[50 Deep]

The weights are in. Enthusiast Matt Solnik got us some weights with the Exhibitions of Speed Titanium Lug Nuts compared to his OEM pieces on the GT350R. This setup is paired with our Signature Wheel SV902 and showcases exactly how the two were engineered to work together flawlessly. The lug nuts are wet with anti-seize for the most real world weights.


The titanium pieces boast a 50% reduction in mass, increased strength, resistance to swelling/heat expansion, a higher engagement point to protect the wheel, corrosion resistance, and flush fitment with the GT350R extended studs. Killer looks to boot so what more could you ask for?


Thanks everyone that got a set and let me know if you want in on the next batch. I am testing these for the F150 Raptor as well, and you can expect the next batch to be built toward the end of 2019.


**The other 4 titanium lug nuts are hidden in the back of the scale for those with a keen eye**

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