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Torque Thrust D's Lug Nuts
#1
Hey All

I've got a 1972 Convertible that I put new 15" Torque Thrust D's on back in 2007.

Issue I'm having is that the Gorilla Lug nuts I used (tapered fit) keep loosening
after driving just a few miles. I did have an incident wherein the left rear wheel
nearly fell off one day after a 40 mile drive.

I do tighten them nearly every time I take the car out, but have to confess I don't
drive it nearly as much as I'd like to because of the constant fear of a wheel 
coming off again.

So, I've recently decided to finally figure out what the story is. I've read that our
cars have short studs and perhaps the thread grip isn't as deep on the lug nut
as needs to be. I've read some people use Extended thread nuts to counter this,
but thinking the Lug holes on the wheels may not allow it anyway.

Ugh....I really have no earthly clue as to how to proceed. I did write American
Racing a while back, but have yet to hear back. My fear is they'll tell me the 
Gorilla's I used are fine and of course I'll be right back where I started.

So, long post short, can anyone offer up any suggestions on how I can tackle
this problem so I can drive my car with peace of mind? 

Hoping someone on here has had the same issue and can tell me how they successfully
fixed it.

Thanks All
Mike
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#2
Mike,

Contact Summit Racing or place where you bought wheels. They should be able to help address your problem.

Sure sounds like you might be using incorrect lug nuts for those wheels.

Ray

1971 Boss 351  
1972 Q code 4 speed convertible 
1971 Mustang Sportsroof  351-2V FMX 
1973 Mach 1 (parts car)
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#3
X2 and call American Racing Customer Service, there is a specific lug nut that is correct-I've never had a single lug loosen on my AR wheels.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
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#4
I fixed nearly an identical problem by welding the wheels to the studs.

Let me check your shorts!
http://midlifeharness.com

[Image: Flamicon2.jpg]


[Image: oldfart.png]
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#5
I would eat more often steaks Smile

73 modified Grandé 351C. Almost done. 
71 429CJ. In progress
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#6
Hey Midlife

Great idea.......but I'll just buy a few extra tubes of JB Weld and see if that helps Smile

Or.....I think I might just wind up calling American Racing if they don't right back soon.

Thanks Guys
Mike
  Reply
#7
http://www.normarkindustries.com/CausesEffects.htm

Assuming these are suitable for the wheels/studs.
How do you tighten them? With what? How much torque? Are the threads in the lug nuts or on the car damaged?
Also how many turns can you do before they lock?

Avoid impact tools for these.

73 modified Grandé 351C. Almost done. 
71 429CJ. In progress
  Reply
#8
(06-27-2018, 02:28 PM)Fabrice Wrote: http://www.normarkindustries.com/CausesEffects.htm

Assuming these are suitable for the wheels/studs.
How do you tighten them? With what? How much torque? Are the threads in the lug nuts or on the car damaged?
Also how many turns can you do before they lock?

Avoid impact tools for these.

Hello Fabrice

Many thanks for the questions and for the link. 

I tighten them with a Torque Wrench at 85Lbs. Pretty sure the threads are decent, but now going
over the link you provided it's possible that I may have one or two I said to Hell with and just 
tightened them down as tight as humanely possible.

The issue, tho, was present well before then, however, I will go back and re asses each wheel this
week-end.

I'll be calling American Racing tomorrow as others have suggested to get their spin (pun intended)
on the best Lug nuts for these particular wheels. I'll post all if I get good feed-back from them.

I'm one of the lucky few that actually has a Summit Racing located in my town, so if nothing
back from AR I may mosey on down to Summit this week-end and pick their brains.

Thanks Guys
Mike
  Reply
#9
Rule of thumb, lug nut engagement should be 1.5 times the stud diameter, or 3/4". With 1/2-20 studs this equates to 15 turns of the lug nut from start to tight.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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#10
I am running the exact same rims on my 71. I have never had an issue with my lug nuts. I bought the lugs nuts, centers and rims all as a kit. Not sure the brand??

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
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