Lug nut torque - any consensus?

[Standard]

http://www.camaro5.com/forums/showth...ght=nut+torque

The manual says 140 foot pounds; but people mention other GM docs that claim 100 foot pounds, and references to the manual being in error.

Which is it?

I'm putting on some lug nuts, want to get it all resolved.

[Sir Nuke]

unless you are actually going to use a torque wrench, its not that critical. get yourself a long handled socket wrench or a +wrench and tighten them down evenly anbd tight......and you will be good to go.

[marley.]

When i ownerd my Charger if I was even 10 lbs under the torque specified in the manual my aftermarkets wheels made a horrible popping sound because they were moving on the studs. When I get my wheels in for the Camaro I will be tightening them to whatever the manual says.

[Standard]

Originally Posted by Sir Nuke

unless you are actually going to use a torque wrench, its not that critical. get yourself a long handled socket wrench or a +wrench and tighten them down evenly anbd tight......and you will be good to go.

You bet your *** I use a torque wrench! - so what's the torque to use, 100 or 140 foot pounds?

[69rsss383]

It's 100 ft/lbs according to a local Chevy service manager. Metric is 140 Newton Meters. Many torque wrenches have both reading on them.

[8ty8 ls1]

yes 100 ft/lbs.

[HeavyD]

Ok, the torque is 140 foot pounds, or 190 Newton Meters - end of story!

Don't go by "general" or "standard" torques. Read the fine print in most of those guides, they alway say to torque to factory specs.

The Camaro uses 14mm x1.50 stud. The GM spec for this is 140 ftlbs, or 190 N.m.
Chev Traverse, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Suburban 1/2 ton, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Silverado 1/2 ton, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Express van, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m

Ok, GM vehicles that have the torque spec of 100 ftlbs / 140 N.m are cars that use the SMALLER 12mm x1.50 stud. This includes the Corvette! Seriously, the Camaro is a big heavy car! It does rank up there with the trucks. The Camaro is the only car that uses the 14mm x 1.50 stud. All other GM cars use the smaller 12mm x 1.5 stud. Look at the Camaro wheel against one from a Colbolt! They are night and day different in size!!!! Why would you think the big Camaro wheel would torque the same as a little Colbolt wheel?

[skuttduck]

Originally Posted by HeavyD

Ok, the torque is 140 foot pounds, or 190 Newton Meters - end of story!

Ok, GM vehicles that have the torque spec of 100 ftlbs / 140 N.m are cars that use the SMALLER 12mm x1.50 stud. This includes the Corvette! Seriously, the Camaro is a big heavy car! It does rank up there with the trucks. The Camaro is the only car that uses the 14mm x 1.50 stud. All other GM cars use the smaller 12mm x 1.5 stud. Look at the Camaro wheel against one from a Colbolt! They are night and day different in size!!!! Why would you think the big Camaro wheel would torque the same as a little Colbolt wheel?

Agreed.

Also keep in mind that when you go looking for tires, such as the Pirelli scorpions, you find them in the SUV section. This makes sense to me that you would have to torque them down as much as an SUV, if they are SUV size tires and lugs.

[Sir Nuke]

Originally Posted by Standard

You bet your *** I use a torque wrench! - so what's the torque to use, 100 or 140 foot pounds?

WELL, the answer is below......read on.

Originally Posted by HeavyD

Ok, the torque is 140 foot pounds, or 190 Newton Meters - end of story!
Don't go by "general" or "standard" torques. Read the fine print in most of those guides, they alway say to torque to factory specs.

The Camaro uses 14mm x1.50 stud. The GM spec for this is 140 ftlbs, or 190 N.m.
Chev Traverse, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Suburban 1/2 ton, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Silverado 1/2 ton, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Express van, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m

Ok, GM vehicles that have the torque spec of 100 ftlbs / 140 N.m are cars that use the SMALLER 12mm x1.50 stud. This includes the Corvette! Seriously, the Camaro is a big heavy car! It does rank up there with the trucks. The Camaro is the only car that uses the 14mm x 1.50 stud. All other GM cars use the smaller 12mm x 1.5 stud. Look at the Camaro wheel against one from a Colbolt! They are night and day different in size!!!! Why would you think the big Camaro wheel would torque the same as a little Colbolt wheel?

[10redrocket]

Always use a torque wrench. If you have someone else working on your car insist that they use a torque wrench. If they don't have one, get out of there.

Torque sticks? Your call but I wouldn't.

[Standard]

Originally Posted by HeavyD

Ok, the torque is 140 foot pounds, or 190 Newton Meters - end of story!

Don't go by "general" or "standard" torques. Read the fine print in most of those guides, they alway say to torque to factory specs.

The Camaro uses 14mm x1.50 stud. The GM spec for this is 140 ftlbs, or 190 N.m.
Chev Traverse, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Suburban 1/2 ton, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Silverado 1/2 ton, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m
Chev Express van, 14mm x 1.50 spec from manual - 140 ftlbs / 190 N.m

Ok, GM vehicles that have the torque spec of 100 ftlbs / 140 N.m are cars that use the SMALLER 12mm x1.50 stud. This includes the Corvette! Seriously, the Camaro is a big heavy car! It does rank up there with the trucks. The Camaro is the only car that uses the 14mm x 1.50 stud. All other GM cars use the smaller 12mm x 1.5 stud. Look at the Camaro wheel against one from a Colbolt! They are night and day different in size!!!! Why would you think the big Camaro wheel would torque the same as a little Colbolt wheel?

Thanks - expressed in terms of the studs, I am now confident in the 140 ftlbs torque.

And to restate, yes, I will only put them on with a torque wrench.

I was so anal about that with my prior car that I'd roll around on drag radials + spare fronts, then install the newly shod wheels myself.

[CamaroSpike23]

also, after 50-100 miles, recheck the torque on the lug nuts.

[mickss]

There is one other thing regarding lug nut torque values. Unevenly torqued wheels will warp your brake rotors. If you let who ever or where ever you have your wheels mounted use an impact gun you do so at your own risk. Some will say it`s OK to use an impact gun, others will not, me i`m in the torque wrench camp. As for shops that use torque sticks you should recheck your lugs with a torque wrench.

[HeavyD]

Yah, that's true. If you watch a tech install your wheels with an impact gun and then use a torque wrench, if the torque wrench clicks right away then the nut is overtorqued! It is ok to snug up the nuts with a gun, but they all need to turn a bit more with the torque wrench to make sure they are properly tightened! Impact gun could have no problem crushing the nuts to 200 ft lbs. If you put your torque wrench on it, it will click and not move. All you know is the nut is torqued to at LEAST 140 ftlbs.