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Saab 9-3 SportSedan, Convertible ('04+)/Combi & 9-3X Workshop Saab 9-3 SportSedan, Convertible ('04+)/Combi & 9-3X , 2003 - 2012 Technical Forum

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  #1  
Old 26-01-07
ArcGP ArcGP is offline
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Join Date: Mar 2004                                                
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Default Lug torque

Hey everyone,

I am planning on swapping the rims on my 2003 9-3 out for a different set of Saab factory rims. I plan on attempting it myself, but can't seem to find any mention of the proper toque setting for the lugs.

Anyone know where I can find it? Surely there are some DIYers here?

Any help greatly appreciated.

GP
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  #2  
Old 26-01-07
Cojoroh Cojoroh is offline
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80 foot pounds.
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  #3  
Old 26-01-07
jpk jpk is offline
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It seems ridiculously low, but it is 80 ft-lbs. It's buried in the owner's manual somewhere.
I found out the hard way the first time I went to torque the bolts down after rotating the tires. Started torquing down the bolts "by feel" like I've always done, and at what seemed like relatively low torque, one of the bolts snapped. It prompted me to go out and buy a torque wrench.
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  #4  
Old 26-01-07
ArcGP ArcGP is offline
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Thanks guys, I guess I need to read my manual a little closer. I plan on using a Torque wrench, too. Hope it goes well. First time doing it all myself.
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  #5  
Old 26-01-07
fishzine fishzine is offline
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Quote:
Originally Posted by jpk
It seems ridiculously low, but it is 80 ft-lbs. It's buried in the owner's manual somewhere.
I found out the hard way the first time I went to torque the bolts down after rotating the tires. Started torquing down the bolts "by feel" like I've always done, and at what seemed like relatively low torque, one of the bolts snapped. It prompted me to go out and buy a torque wrench.
Alloy wheels always get torqued much lower than the old steel wheels, also always make sure to re-torqued any wheel after a couple hundred miles as allow wheels are known to have the bolts loosen up after some driving. Had this happen in my last car once and was surprised by the time I felt the shake in the car it had worked itself REALLY lose, but then again that car always drove like crap.
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  #6  
Old 26-01-07
shaggy shaggy is online now
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are torque numbers affected if the bolt threads are greased/lubed?
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  #7  
Old 26-01-07
Pokerguy Pokerguy is offline
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Quote:
Originally Posted by shaggy
are torque numbers affected if the bolt threads are greased/lubed?
Why would you grease/lube wheel studs ? This is one item that you don't ever want to back itself off . . . and it's not like 80 ft/lbs is very much to worry about getting seized on there.

In short, IMHO don't ever grease wheel studs. Clean them with a wire brush and a rag . . . but no grease or never-seize.

Last edited by Pokerguy; 26-01-07 at 05:10 PM.
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  #8  
Old 26-01-07
Cojoroh Cojoroh is offline
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Quote:
are torque numbers affected if the bolt threads are greased/lubed?
yes, lubricants will give you a different torque reading.
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