Torque wrench necessary for putting on wheels?

[wbradley]

Tightened it so far it pulled the rotor partially through the lug nut???? LOL

[Tcoat]

Originally Posted by wbradley

Tightened it so far it pulled the rotor partially through the lug nut???? LOL

How would that work? The nut cut all the way through the wheel to the rotor wheel face or the lug came out of the hub and still had enough flange on the back to catch the rotor?
If you are tightening these so hard the lugs are pulling out of the hub to even touch the rotor you are superhuman.
The lugs on these are not attached to the rotors so somebody really needs to explain to me how they think tightening the nuts can damage a rotor in any way. I am truly baffled.

[cjd]

Originally Posted by Tcoat

How would that work? The nut cut all the way through the wheel to the rotor wheel face or the lug came out of the hub and still had enough flange on the back to catch the rotor?
If you are tightening these so hard the lugs are pulling out of the hub to even touch the rotor you are superhuman.
The lugs on these are not attached to the rotors so somebody really needs to explain to me how they think tightening the nuts can damage a rotor in any way. I am truly baffled.

I think you already said this, but the shear strength of the bolts will give out first every time. I'm pretty sure even if you pulled a stud through, damage would be isolated to the hole at the hub so nothing would mount straight, but the rotor still wouldn't be warped. It might feel like it, wobble all the way to an expensive repair bill...

I assume the iron/steel at the hat isn't hardened or anything so it would just deform locally...

[gramicci101]

It's been a long time since I had my elbow calibrated, so I use a torque wrench. I torque to 30 ft-lbs while the wheels are in the air, then to 60 and 90 once they're on the ground.

[MuseChaser]

Just a brief cautionary tale re/ the el cheapo Harbor Freight torque wrenches. As the contrite owner of both 1/2" and 3/8" drive HF torque wrenches, I can say with all certainty that they are incredibly inaccurate, especially on the lower end of each of their respective ranges. I still use the larger one when torqueing my lug nuts, but I won't use either one in anything truly critical. I've sheared off a small bolt or two when rebuilding lawn mower or chainsaw motors using the smaller torque wrench becuase the wrench never registered the targeted torque.

If you want a torque wrench that actually measures torque, spend the dough on a good one. If you want a cheap but large heavy wrench that looks like a torque wrench and registers a "click" semi-randomly, the HF wrenches fit the bill.

[humfrz]

Originally Posted by Tcoat

How would that work? The nut cut all the way through the wheel to the rotor wheel face or the lug came out of the hub and still had enough flange on the back to catch the rotor?
If you are tightening these so hard the lugs are pulling out of the hub to even touch the rotor you are superhuman.
The lugs on these are not attached to the rotors so somebody really needs to explain to me how they think tightening the nuts can damage a rotor in any way. I am truly baffled.

Yes, me too is baffled.

Maybe someone can explain that by using this diagram .....


humfrz

[justatroll]

Originally Posted by guybo

You can get a torque wrench and a socket and it's not all that expensive. If you under-torque, obviously that's bad. But over-torquing can stretch threads and if you REALLY over-do it, warp your rotors.

No.... No you cannot warp the rotors
The only thing I know of that can warp rotors is overheating them repeatedly.

Originally Posted by guybo

That said, people tighten lugnuts using the German torque spec everyday and do fine.

Well when not using a TR I use the "1 Grunt & 1 Fart technique" (1 grunt while in the air, one fart once on ground)

The german torque spec must be "ein Grunzen und ein Furz"

[Ultramaroon]

No, it's "gutentite."

Everyone should start with a beam style torque wrench.

1. linearity
2. consistency
3. elegance of function
4. cost






It's an excellent learning tool for the novice and it can be used to calibrate the more convenient click (or whatever it's called) style wrench.

[nikitopo]

Wheels and tires is the most important part of your car. Especially on a sports car. Use a torque wrench and re-check after driving a few miles.

[Tcoat]

Originally Posted by cjd

I think you already said this, but the shear strength of the bolts will give out first every time. I'm pretty sure even if you pulled a stud through, damage would be isolated to the hole at the hub so nothing would mount straight, but the rotor still wouldn't be warped. It might feel like it, wobble all the way to an expensive repair bill...

I assume the iron/steel at the hat isn't hardened or anything so it would just deform locally...

The rotors are machined cast so if you managed to pull against it that hard you would crack or chip it before you would ever warp it.

[wbradley]

Originally Posted by Tcoat

How would that work? The nut cut all the way through the wheel to the rotor wheel face or the lug came out of the hub and still had enough flange on the back to catch the rotor?
If you are tightening these so hard the lugs are pulling out of the hub to even touch the rotor you are superhuman.
The lugs on these are not attached to the rotors so somebody really needs to explain to me how they think tightening the nuts can damage a rotor in any way. I am truly baffled.

The second scenario. Somehow the stud pulled the hub through the lug nut, then the rotor followed thru the nut as well. You know like pulling a pashmina through a wedding ring. LOL Forgot to point out this is all based on the premise that the rotor is made of coffee filter material somehow attached to the stud. LOL

Like a Salvador Dali painting.

[humfrz]

DAAAAAMMMMNN! ...... 24 posts (and counting) on how to tighten lug nuts .....


humfrz

[wbradley]

Had a friend whose nickname was "lugnuts".

Problem is another friend's older immigrant mom overheard/misheard his nickname and called him "lovenuts". LOL

[Tcoat]

Originally Posted by wbradley

The second scenario. Somehow the stud pulled the hub through the lug nut, then the rotor followed thru the nut as well. You know like pulling a pashmina through a wedding ring. LOL Forgot to point out this is all based on the premise that the rotor is made of coffee filter material somehow attached to the stud. LOL

Like a Salvador Dali painting.

AHHHHH I see. Sort of trans dimensional rotors. Suppose that would be OK as long as the rotors don't develop a "sense of existence" like the TRD control beams have.