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Old 09-17-2003, 12:52 AM   #1
WRX_Convert
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Default WRX Lug Nut Torque Spec

Does someone know off-hand what the torque spec is for WRX lug nuts? I'm rotating my tires soon. Thanks!

Carl
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Last edited by WRX_Convert; 09-17-2003 at 01:04 AM.
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Old 09-17-2003, 02:44 AM   #2
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65.7 ft-lbs.
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Old 09-17-2003, 07:57 AM   #3
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12mm studs need 70-80 ft. lbs. and 8 full turns of engagement
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Old 09-17-2003, 12:33 PM   #4
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Default 8 full turns of engagement?

Luke what do you mean by 8 full turns of engagement?
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Old 09-17-2003, 02:12 PM   #5
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You must be able to turn the lug nut 8 full turns between putting it on and it reaching correct torque.
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Old 09-17-2003, 03:13 PM   #6
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I've been torquing mine at 75 ft-lbs.

I'm still not clear on the 8 full turns of engagement...never heard of that
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Old 09-17-2003, 06:33 PM   #7
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Question

I think that just means that the lug turns at least 8 360degree rotations before tight, ie if it only turns 6 times and it's tight then you have a crossed thread or other issue.
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Old 09-17-2003, 06:35 PM   #8
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BTW this could go in the FAQ i was just looking for the spec too.
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Old 09-18-2003, 08:56 AM   #9
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Quote:
Originally posted by Lowball
I've been torquing mine at 75 ft-lbs.

I'm still not clear on the 8 full turns of engagement...never heard of that
I believe Luke is referring to how much of the wheel stud is physically within the lug nut. For example, you wouldn't want to drive around with only two threads worth of engagement, even though it was torqued to the specified amount before stopping. You can lose thread engagement in several ways, the most common of which is installing brake rotors that have a different center thickness than stock.

I keep mine torqued to 80 ft-lbs at all times, but that's what the track tech inspectors feel like they need to see, anyway.

HTH,

Scott
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Old 09-18-2003, 12:05 PM   #10
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Quote:
Originally posted by sdecker


I believe Luke is referring to how much of the wheel stud is physically within the lug nut. For example, you wouldn't want to drive around with only two threads worth of engagement, even though it was torqued to the specified amount before stopping. You can lose thread engagement in several ways, the most common of which is installing brake rotors that have a different center thickness than stock.

I keep mine torqued to 80 ft-lbs at all times, but that's what the track tech inspectors feel like they need to see, anyway.

HTH,

Scott
Ok Scott. I totally get it now. I just know I hand tighten every thing 1st (which takes awhile to get the full 8+ turns in:wink: ) and then put the torque wrench on it at 75ft-lbs. which seems to be fine. I know a few peep's at the track are using 80ft-lbs.
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Old 09-19-2003, 06:54 AM   #11
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The 65.7 ft-lbs quoted above is, afair, from the factory service manuals.

The owner's manual states 58-72 ft-lbs. (and of course the 65.7, figuring rounding adjustments from metric, is right in the middle).
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Old 11-12-2013, 02:05 PM   #12
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'13 WRX wheels, torque spec in the owners says 72 ft/lbs. with an * that says 88-110ft/lbs at the end of the torque wrench.

Can anyone confirm, is it 72ft/lbs set on the wrench or 88?
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Old 11-12-2013, 02:26 PM   #13
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Quote:
Originally Posted by DisrupTer911 View Post
'13 WRX wheels, torque spec in the owners says 72 ft/lbs. with an * that says 88-110ft/lbs at the end of the torque wrench.

Can anyone confirm, is it 72ft/lbs set on the wrench or 88?
You appended this to a thread from 2003?

My manual states 100Nm (73.8 foot pounds). I didn't notice a range.
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Old 11-12-2013, 03:16 PM   #14
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why start a new thread when this one has exactly the title I need.

Did you not read the * at the end.

it says torque measurement of 88-110ft/lbs at torque wrench end or something of that matter.
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Old 11-12-2013, 04:18 PM   #15
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been torquing mine to 85-90 ft-lbs for the past 4 years. (lots of wheels off and on in that time). yeah it's higher than the manual, but its fine.
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Old 11-12-2013, 10:05 PM   #16
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i torque to 75ft-lbs and have never had a lug stud issue or a loose wheelf.....in the last 250k miles and 12 or so years

YMMV, but overtorquing wheel lugs is an idiots move........unnecessary and illogical

but lotsa 'common mans' 'common sense' is just plain stupid......stupid people almost always torque 'em 'til they squeal

dont do that
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Old 11-12-2013, 10:24 PM   #17
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Quote:
Originally Posted by DisrupTer911 View Post
why start a new thread when this one has exactly the title I need.

Did you not read the * at the end.

it says torque measurement of 88-110ft/lbs at torque wrench end or something of that matter.
Why start a new thread? I can only speak for myself, but sometimes I don't bother scrolling to the end of a thread if it appears that someone has posted a comment to a discussion that ended a decade ago.

The torque value I provided was from page WT-4 of the 2013 service manual. No asterisk.

I have no idea what "88-110 ft lbs at torque wrench end" might mean.

I set my torque wrench to 74 ft lbs. (I really ought to have the tool re-calibrated one of these decades.)

In the past, I've used 95 ft lbs, for cars where I didn't have the service manual. Nothing bad happened.
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Old 11-12-2013, 10:42 PM   #18
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Quote:
Originally Posted by DisrupTer911 View Post
'13 WRX wheels, torque spec in the owners says 72 ft/lbs. with an * that says 88-110ft/lbs at the end of the torque wrench.

Can anyone confirm, is it 72ft/lbs set on the wrench or 88?
It's easy to confuse (I did a double take myself), but have a closer look at the units. Quoted from the owner's manual:
Quote:
This torque is equivalent to applying approximately 88 to 110 lbf (40 to 50 kgf) at the edge of the wheel nut wrench. If you have tightened the wheel
nuts by yourself, have the tightening torque checked at the nearest automotive service facility as soon as possible.
"lbf" is pound-force which is a force unit, distinct from the "lbf.ft" unit of torque. So I believe what they're saying is to apply 88 to 110 lbs of force to the end of the wheel nut wrench to provide the correct torque spec. I believe they're talking about the wheel wrench that came with the car. Hope that helps
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Old 11-13-2013, 10:31 AM   #19
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awesome okay. 75#s it is! since my wrench doesn't have 72 lol

Thanks everyone.

Why muddy up the forum and take up resources when a thread exists to suit my needs. I'm not hijacking it for ulterior questions and answers, it directly relates to WRX wheel lugs.
And you can easily get to the end of a thread if you click the down arrow before the thread title text instead of scrolling and clicking page by page...
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Old 08-25-2014, 09:29 PM   #20
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im so glad you did, i needed to know also and didnt feel like scouring the wastelands of nasioc, i guess i couldve just pulled out the manual, but hey im lazy
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Old 08-26-2014, 12:05 AM   #21
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Quote:
Originally Posted by Matt troise View Post
im so glad you did, i needed to know also and didnt feel like scouring the wastelands of nasioc, i guess i couldve just pulled out the manual, but hey im lazy
You could've waited 3 more months and it would've been the 1 year anniversary of this thread.

great contribution.
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Old 01-03-2015, 10:16 PM   #22
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Originally Posted by sc00by4life View Post
You could've waited 3 more months and it would've been the 1 year anniversary of this thread.

great contribution.
One year? WTF? The original post was in 2003 holy **** learn mathematics wtf. Omg omg quit asking the. Same question omg dont revive old threads omg omg. Btw great contribution!
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Old 05-15-2015, 05:07 PM   #23
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Quote:
Originally Posted by wrx12tt View Post
It's easy to confuse (I did a double take myself), but have a closer look at the units. Quoted from the owner's manual:


"lbf" is pound-force which is a force unit, distinct from the "lbf.ft" unit of torque. So I believe what they're saying is to apply 88 to 110 lbs of force to the end of the wheel nut wrench to provide the correct torque spec. I believe they're talking about the wheel wrench that came with the car. Hope that helps
lb/f is pounds per foot not pound-force. pounds per foot is force per area which is actually a stress if you want to get technical
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Old 05-16-2015, 02:06 PM   #24
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i torque mine to 85 and been like that since day one and 3 years later no issue!
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Old 05-16-2015, 07:09 PM   #25
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Quote:
Originally Posted by S1CkWrx View Post
i torque mine to 75 and been like that since day one and 13 years later no issue!

me too......
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