150 Ft Lbs Of Torque For A Lugnut - Automotive Repairs - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Do It Yourself > Automotive Repairs


CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Like Tree7Likes
Reply
 
Thread Tools Display Modes
Old 11-27-2016, 06:36 PM   #1
Member
 
Bigplanz's Avatar
 
Join Date: Apr 2009
Location: Louisville KY
Posts: 869
Rewards Points: 908
Default

150 ft lbs of torque for a lugnut


Apparently, this is the spec for a 14mm stud on a lincoln navigator: 150 ft lbs of torque. I have never, ever, known of any lug nut that needed more than 100 ft lbs of torque. So, I change a flat, tighten the lug nuts the way I always do, run them in snug with an impact wrench, then lean on them with a 1/2 inch breaker bar until my weight doesn't turn them anymore.

Wrong. Driving down a local street, 10MPH, thank God, and the wheel FALLS OFF!! Yeah, it was like that. All of that and so much more. Going slow like that, I only left a 4 foot long scrape asphalt from the brake rotor guard grinding on the street. I got out, looked at it, thought, damn. somebody must hate me to loosen my lugnuts. I found two of them 10 feet from where I stopped. Thankfully, it was a quiet side street. I managed to get the jack under the rear axle, got the SUV up enough to pull the brake guard away from the rotor so it wouldn't scrape on it, then up enough to ge the tire back on. Then, I took one lug nut off the other three wheels and put the wheel on running the impact wrench as hard as it would go. I crossed my fingers, drove slowly away, and not a peep out if it all the way to autozone to get new lug nuts. Drove slowly home, looked up the torque specs (150 ft lbs!!) and got out my 1/2 torque wrench that maxes out at 150 ft lbs, I had to stand on it to get it to click.

Yeah, I am lucky all right. No doubt. Things learned: torque the lugnuts! Keep a torque wrench in the SUV! Keep at least one jack stand in the SUV! (The little jack looked sketchy there for a while.)
Attached Thumbnails
150 ft lbs of torque for a lugnut-1127161312-00.jpg  

Advertisement

Bigplanz is offline   Reply With Quote
Old 11-27-2016, 06:44 PM   #2
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 33,834
Rewards Points: 12,794
Default

Re: 150 ft lbs of torque for a lugnut


I've changed hundreds of tires on trucks, trailers, cars, never once had one come loose, never once used a torque wrench.
Something else had to cause that wheel to fall off.
Bondo, Fix'n it, r0ckstarr and 1 others like this.

Advertisement

__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
joecaption is offline   Reply With Quote
Old 11-27-2016, 06:54 PM   #3
Property Mgt/Maint
 
Join Date: Mar 2015
Location: Upstate NY
Posts: 2,420
Rewards Points: 350
Default

Re: 150 ft lbs of torque for a lugnut


Sounds like maybe the weight of the vehicle was on the wheel when you originally tightened. The wheel was probably away from the hub and lugs won't draw it in with the weight on it.
MTN REMODEL LLC and lenaitch like this.
Yodaman is offline   Reply With Quote
The Following User Says Thank You to Yodaman For This Useful Post:
paul100 (01-01-2017)
Old 11-27-2016, 08:44 PM   #4
Member
 
Bigplanz's Avatar
 
Join Date: Apr 2009
Location: Louisville KY
Posts: 869
Rewards Points: 908
Default

Re: 150 ft lbs of torque for a lugnut


When I changed the flat the other day, I got the car off the ground, took the flat off, put the spare on, and it was off the ground about 1/2 inch. I then put the lug nuts on, spun them on snug, crisscross, with the impact wrench. Snap, snap snap, they were all snug. The I lowered the wheel enough so the tire was on the ground enough to keep it from turning, and tightened some more. Then I lowered it all the way, and leaned on all the lug nuts with a 2 foot, 1/2 inch breaker bar until my weight wouldn't move it anymore. This morning, the spare tire was flat. I filled it with air, and the lug nuts were all on the wheel. I was inches from the wheel. I would have noticed if any were missing. I drove the car to Goodyear, to get a new tire. None in stock, we'll have it in tomorrow. I say, ok, I am driving down the street and the wheel falls off!!! Two lug nuts are in the road 10 feet behind me! WTF?!?!?!? I mean, this one has me perplexed and more than a little concerned.
Bigplanz is offline   Reply With Quote
Old 11-27-2016, 10:14 PM   #5
Member
 
Join Date: Aug 2013
Location: North Georgia
Posts: 1,056
Rewards Points: 112
Default

Re: 150 ft lbs of torque for a lugnut


Do you get along with all your neighbors?
ChuckF. is offline   Reply With Quote
Old 11-27-2016, 10:28 PM   #6
Member
 
Join Date: Mar 2012
Location: far sw sub chicago
Posts: 6,240
Rewards Points: 140
Default

Re: 150 ft lbs of torque for a lugnut


someone at the goodyear took them loose.

when driving on loose lug nuts, the lugs don't come off, the studs break. far as i have seen anyway.
Fix'n it is offline   Reply With Quote
Old 11-27-2016, 11:04 PM   #7
Member
 
Join Date: Feb 2014
Location: Central Wyoming
Posts: 5,185
Rewards Points: 690
Default

Re: 150 ft lbs of torque for a lugnut


I carry a 4 way lug wrench in my ride. and make sure that they are ARMSTRONG tight.

Was this a MAG wheel? If so they need a second torque often after a few miles.

Many years ago I had a new set of tires installed at a tire store, and was on my way, a block and a half away one of my wheels fell off, was I ever pissed?

Walked back to the store made them come and get me back on the road.

And to this day I check all my lugs myself with my 4 way before I leave their store.
de-nagorg is offline   Reply With Quote
Old 11-28-2016, 08:23 AM   #8
Member
 
Bigplanz's Avatar
 
Join Date: Apr 2009
Location: Louisville KY
Posts: 869
Rewards Points: 908
Default

Re: 150 ft lbs of torque for a lugnut


Goodyear didn't touch the car. Tech just took the size off the sidewall and ordered the tire.
Bigplanz is offline   Reply With Quote
Old 11-28-2016, 09:28 AM   #9
Member
 
Brainbucket's Avatar
 
Join Date: Mar 2015
Location: Walker, Louisiana
Posts: 349
Rewards Points: 698
Default

Re: 150 ft lbs of torque for a lugnut


Yeah. You don't tighten those down, they will come off. Can't see the lugs to well but they look ok. Ford lug nut with the washer made onto it are the ones to watch out for. Aluminum rims are to be torque or you will have a vibration and/or they will fall off. Seen it to many times. Steel rims not so much. I use a torque wrench on all aluminum rims and my Ingersol Rand 231 for steel rims. I know my gun. Oh and make sure the torque wrench is unloaded before you put it away. Meaning make sure it not at torque value but at 0 when stored. Leaving it at value will weaken the wrench and torque values will be off.
__________________
If you first donít succeed, get a bigger hammer!

Last edited by Brainbucket; 11-28-2016 at 09:32 AM.
Brainbucket is offline   Reply With Quote
Old 11-28-2016, 06:52 PM   #10
Member
 
Join Date: Sep 2016
Posts: 140
Rewards Points: 280
Default

Re: 150 ft lbs of torque for a lugnut


150 lbs torque?? W-O-W.
Oh- consider yourself lucky, Big, I had a front wheel fall off totally going 60 mph. I was lucky.
papereater is offline   Reply With Quote
Old 11-28-2016, 08:06 PM   #11
Member
 
Join Date: Aug 2013
Location: North Georgia
Posts: 1,056
Rewards Points: 112
Default

Re: 150 ft lbs of torque for a lugnut


This happened to me years ago on an old truck I had. Unfortunately in the time it was loose, the wheel rattled around enough to ruin the GM 6-bolt steel wheel by enlarging the holes.

I always brush a very small amount of anti-seize compound on wheel studs, just once in the time I have that vehicle. Generally, all fastener torque figures are for lightly-oiled threads, but that doesn't seem to be recommended by manufacturers for wheel studs. Your case makes me wonder if you are getting false readings because of rough threads. That might lead to the wheel rattling the loose nuts off entirely.
ChuckF. is offline   Reply With Quote
Old 11-28-2016, 08:50 PM   #12
Member
 
Join Date: Aug 2013
Location: North Georgia
Posts: 1,056
Rewards Points: 112
Default

Re: 150 ft lbs of torque for a lugnut


Another thing, look closely at the lug nut/wheel design for wear or mismatch. For example, if you have steel wheels with lug nuts with a conical section on the end, and a matching depression in the wheel holes, cracks or wear in the wheel holes, or wear on the nuts can result in the nut being tightened right into the drum/disk. That can mean that some of the 150 lbs you see on the torque wrench is being wasted into the drum/disk and not the wheel. Thus, the wheel actually is loose, and it rattles the nuts off. Look for wear marks on the nuts where there should not be any. Might have to grind a little off the very tip of the nuts.

If you have a typical mag wheel design, with part of the nut that goes into the wheel, that part can be too long and hitting the drum/disk. If it uses a washer, the washer might be too thin. Look for wear marks on the nuts where there should not be any.

Maybe your wheel studs don't have threads in them all the way to the surface of the drum/disk.
ChuckF. is offline   Reply With Quote
Old 11-28-2016, 09:24 PM   #13
Member
 
Bigplanz's Avatar
 
Join Date: Apr 2009
Location: Louisville KY
Posts: 869
Rewards Points: 908
Default

Re: 150 ft lbs of torque for a lugnut


The studs are threaded all the way down the length. The nuts are the washer and nut one piece design. Damndest thing I ever saw, wheel coming off in low speed traffic. Didn't even break a lugs stud. I will have goodyear inspect the lug studs and replace any that are damaged.

I wonder why such a high torque value on the lug nuts? 150 ft lbs is axle nut torque.

Just glad nobody got hurt and the car is apparently unaffected.
Bigplanz is offline   Reply With Quote
Old 11-28-2016, 09:58 PM   #14
World's Tallest Midget
 
Mort's Avatar
 
Join Date: Nov 2008
Location: Methow Valley, WA
Posts: 1,378
Rewards Points: 690
Default

Re: 150 ft lbs of torque for a lugnut


140-150 is standard for full size trucks and suvs. My 98 GMC Sierra takes 140, I torque it every time.
__________________
I hate signatures.
Mort is offline   Reply With Quote
Old 11-29-2016, 07:37 PM   #15
Member
 
Join Date: Sep 2016
Posts: 140
Rewards Points: 280
Default

Re: 150 ft lbs of torque for a lugnut


Quote:
Originally Posted by Mort View Post
140-150 is standard for full size trucks and suvs. My 98 GMC Sierra takes 140, I torque it every time.
Guess if you havent ever owned a truck/suv one wouldnt know.
Bigplanz likes this.

Advertisement

papereater is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How much torque to use on deck bolts? Deck Carpentry 12 07-31-2016 10:11 AM
Senco cordless collated screw guns? Also which RPM and torque for drywall is best? Deck Drywall & Plaster 12 01-20-2013 10:53 PM
horsepower vs torque av-geek Tractors & Mowers 1 06-04-2012 09:17 AM
Kobalt USA and Gearwrench USA torque wrench opinions toolaholic Tools 2 05-21-2012 08:14 PM
Torque Letter? bigmacfann Electrical 14 08-11-2010 11:40 AM




Top of Page | View New Posts

 

Search Engine Friendly URLs by vBSEO 3.6.1