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Torque

140?

Torque

Postby bluegrassZ71 [OP] » Oct 06 2010, 5:03am

The manual for my 2008 Sierra says to torque the wheels to 140 pounds. This seems like a lot to me... Do you guys go the full 140 or something less?
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Re: Torque

Postby lzn197 » Oct 07 2010, 1:50am

ALWAYS go with the 140. Make sure the face of your brake rotor and the face on your wheel that mate together are free from rust and are as clean as they can be. Nobody wants to lose a wheel!!!! Use the cross pattern tightening procedure shown in your owners manual. Do NOT just tighten them in a cloclwise or counter clockwise pattern!

If it's an older truck and those surfaces are kinda grungy, I torque the nuts, drive the vehicle 5 miles or so then re-torque just to be safe! Don't forget to back off the torque wrench adjuster to take the pressure off the internal spring. That keeps your wrench accurate. But you knew that..........RIGHT?
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Re: Torque

Postby bigryp » Oct 18 2010, 5:12pm

I just use the pneumatic wrench to crank them on....like the guys at discount tire, right??? Just kidding.....
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Re: Torque

Postby HartskiHartski is online! » Oct 18 2010, 6:18pm

Wow, 140 seems awful high for an aluminum rim.
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Re: Torque

Postby lzn197 » Oct 18 2010, 6:28pm

Interesting comment Hartski. Ever had a wheel fall off? LOL!
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Re: Torque

Postby In2Trux » Nov 05 2010, 3:10pm

My aluminum wheels are getting 150 lbs from the dealership. I just assumed they knew what they were doing.
I think I'm gonna research this a little more.
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Re: Torque

Postby Z15 » Nov 05 2010, 3:34pm

The torque value is usually determined from the size (diameter) and strength of the lug. Torquing places a uniform force on wheel to the axle lug disc face which prevents movement.


IMPORTANT - Check lug nuts for proper torque following 50 miles of driving.
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Re: Torque

Postby EKinMN » Nov 05 2010, 11:27pm

Torque to spec, and then re-torque after 50-100 miles, just to be sure.

And yes, I came darn close to losing a wheel a couple years ago. Never again.
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Re: Torque

Postby Z15 » Nov 06 2010, 12:55am

GM has a article in its service news this month on this topic.
Wheel Installation and Wheel Nut Torque
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Re: Torque

Postby EKinMN » Nov 06 2010, 2:12am

Great link, Z15! I had heard about not greasing the lugs on my boat. This helps explain why.
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