An update to my earlier post. My DP nuts arrived
Measurements are below
My measurements of the DP are at the bottom, other dims are from DP.
So it is smaller - looks like we are splitting hairs based on the diameters.
BUT
I wont bore you with the math, but this results in a stock contact area (the tapered surface) of 0.773 sq inches vs the aftermarket DP contact area of 0.624 sq inches. That's a 19.3% reduction in contact area. As an Engineer that is significant.
So why did they do this and still recommend them for our truck? Hell I don't know!
I have my take off still in my garage (anybody want some machined wheels!?) placing each lug nut into the wheel it obvious the stock really settles into the taper and with moderate downward force you cant push the lug sideways out of the taper. With the DP lug its easily pushed out of the taper. So what does this mean. Again Hell I don't know! Its just an observation.
Just to add more confusion as I agreed with Phil that the contact area needed to match the stock lugs - form a site called https://www.dummies.com/ (quite appropriate) and an article titled How Surface Area Affects the Force of Friction
concludes with paragraph that starts with The force due to friction is generally independent of the contact area between the two surfaces.
I don't know what to think anymore!
To add more to think about - but totally cosmetic. That giant 1 inch ring where the cap is crimped to the stock lug not hides the uncoated surface on the wheel around each lug nut. Sorry OCD owners!
Well this has been a long rambling post - maybe it helps.
I may call some lug nut companies. I can't believe the big names would push something out that has a chance of not being "good enough" as a wheel coming off could have some serious liability.
By the way my DP black nuts are very nice, look just like the McGard and Gorilla bulged acorn. Finish is solid, but time will tell.
hmmm should I go chrome.....
3/4" = 19mm
I'm going to have to pop my back seat open again and see what I can fit there. I swear it wasn't that big, but obviously you fit a lot of stuff in there.It is probably obvious, but I wanted to point it out to hopefully save someone a headache down the line.
The factory lug nuts are 3/4", as is the included lug wrench on the truck. The gorilla automotive lug nuts I swapped are 13/16.
No big deal, but if you get a flat tire, you wont be able to use the lug wrench on the truck to get your tire off. Be sure to put tools on your truck so you can get them off when needed.
This is how I mounted a lug wrench behind the rear seat (and a couple of hitches as well ?). It fits better than it looks from this picture.
Or just pack a four way and call it good. The added leverage is a plus too.It is probably obvious, but I wanted to point it out to hopefully save someone a headache down the line.
The factory lug nuts are 3/4", as is the included lug wrench on the truck. The gorilla automotive lug nuts I swapped are 13/16.
No big deal, but if you get a flat tire, you wont be able to use the lug wrench on the truck to get your tire off. Be sure to put tools on your truck so you can get them off when needed.
This is how I mounted a lug wrench behind the rear seat (and a couple of hitches as well ?). It fits better than it looks from this picture.
That’s what I keep in both cars with impact wrench rated socketIs yours a ratcheting breaker bar? I'm thinking this non-ratcheting one from Harbor would probably be sufficient since it will only be used for the rare occasion of changing a flat (I would 1st call roadside assistance and only change it if they were not available) or would ratcheting be a better choice?
1/2 in. Drive 18 in. Breaker Bar (harborfreight.com)
Do you use an extension off the breaker bar and also with a deep 3/4" socket? If you ever had to remove lug nuts with the breaker bar, do you replace them using a torque wrench? I have a floor jack but it takes up a lot of space in my SCab, especially when I'm traveling.
That is a 4 way I keep behind my seat, which was kinda the point of the thread. If you dont pack something, and installed a different sized lug, you won't be able to get the tire off in an emergency.
And you won’t shoot your eye out :^)
