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PANDEMIC-USA 50" Double row LED LIGHT BAR!! These thiANOTHER Rockridge4wd Creation!! Spare Tire Carrier Delete The Jeep Forum Discount is ON!

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Unread 11-28-2013, 11:12 AM   #1
jbarrett
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Lost a Wheel Yesterday...

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Unread 11-28-2013, 11:17 AM   #2
tjkj2002
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If you only torqued the lugnuts to 40lbs-ft that was the problem,should be 100lbs-ft.Once one loosens it vibrates the rest loose.
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Unread 11-28-2013, 11:19 AM   #3
Jeffro06
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40ft lbs for lugs? Really? I do 95 ft lbs, re-check after 50 miles. Yes it's possible they all rattled loose....in fact I think you have he best evidence to back that up.

Sucks to hear that happened to you.
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Unread 11-28-2013, 11:23 AM   #4
jbarrett
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Unread 11-28-2013, 11:23 AM   #5
Tom95YJ
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Quote:
Originally Posted by tjkj2002
If you only torqued the lugnuts to 40lbs-ft that was the problem,should be 100lbs-ft.Once one loosens it vibrates the rest loose.
I've had that happen before Not a fun time loosing a rear wheel on the hiway
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Unread 11-28-2013, 11:27 AM   #6
tjkj2002
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Originally Posted by jbarrett View Post
Typo - sorry. 70 ft lbs. I understand the spec is 100 ft lbs (+/- 15), but I have been tightening those lugs to 70-75 lbs for years. Never had any problems. Ever.
100lbs +/- 15 is 85-115 so you were under.It was bound to happen sooner or later.I always go to max spec,better to safe the sorry and yes you must recheck after 50 miles or so.


By rotational forces the right side lugnuts tend to loosen while the left side tightens itself and why big trucks use both left hand and right hand thread wheel studs/lugnuts.
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Unread 11-28-2013, 12:03 PM   #7
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I agree^^ and i think large temperature differences between the alloy rims and steel hubs makes a difference too.I torque to 120-130 ft lbs and my 125lb wife can break them loose with a 2' breaker bar .
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Unread 11-28-2013, 01:09 PM   #8
tjkj2002
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Ahhhhh can't fess up to your own mistake?
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Unread 11-29-2013, 09:45 AM   #9
EasternPA
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Maybe we should start a "lost a wheel" club. I lost the left front at 45-50 mph on a country highway.
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Unread 11-29-2013, 02:47 PM   #10
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I'd join... Lost the left rear going into a right hander at 30
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Unread 11-29-2013, 06:49 PM   #11
toycam
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Quote:
Originally Posted by tjkj2002 View Post
100lbs +/- 15 is 85-115 so you were under.It was bound to happen sooner or later.I always go to max spec,better to safe the sorry and yes you must recheck after 50 miles or so.


By rotational forces the right side lugnuts tend to loosen while the left side tightens itself and why big trucks use both left hand and right hand thread wheel studs/lugnuts.
There is such a thing as over-torquing.
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Unread 11-29-2013, 06:56 PM   #12
colinzj
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Originally Posted by toycam View Post
There is such a thing as over-torquing.
This becomes clear when your wheel goes rolling down the road with the studs still attached.
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Unread 11-29-2013, 07:59 PM   #13
tjkj2002
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Quote:
Originally Posted by toycam View Post
There is such a thing as over-torquing.
Yes there is but going to max spec is not "over-torqueing" and they under rate the wheel studs by a far amount.
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Unread 11-29-2013, 09:57 PM   #14
toycam
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Quote:
Originally Posted by tjkj2002
Yes there is but going to max spec is not "over-torqueing" and they under rate the wheel studs by a far amount.
It's true that the studs can handle a bit more stress, but I make it a practice to initially torque it to the minimum setting. That way if theres any play or discrepancy in my mind that it's not secure enough, I still have some wiggle room in how much more torque I can apply.
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Unread 11-30-2013, 07:39 AM   #15
BAH101
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Quote:
Originally Posted by toycam
It's true that the studs can handle a bit more stress, but I make it a practice to initially torque it to the minimum setting. That way if theres any play or discrepancy in my mind that it's not secure enough, I still have some wiggle room in how much more torque I can apply.
In aviation, unless it is a castellated nut with a cotter pin we always torque to the max setting. Then when checking the torque, you use the min setting to ensure it hasn't moved.
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