Re calibrating a mastercraft torque wrench

[5.4MarkVIII]

2013 edge.
I cleaned the hubs. Tourqed to 100ft/lbs. drove for a week. Re tourqued to 100ft/lbs. drove for a week had a weird clicking sound. Took it to the mechanic and he said the wheel was loose and needed to be re tourqued.

Ten years in autobody I've tourqued a lot of wheels. Just want to be sure the wrench is correct. as I have three cars of my own in the road plus I swap the winters for my inlaws as well. Just want to make sure they are all good.

[ZR]

For sure wheel was on cocked

[Ponyryd]

Sounds strange to me, Edge doesn't have stupid lugs, so that shouldn't be the problem. may have been a cocked wheel I suppose, anything is possible. If I'm in doubt about my torque wrench, I always just compare it with another to make sure. Like, if you go check the torque with your wrench now, what does it say?

[Harbinger]

Could also be worn studs correct me if I'm wrong

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[Ponyryd]

^Stretched studs will give a erratic torque reading, yes, likely would have snapped off within a few hundred km tho

[ZR]

Corrosion on the wheels mounting flange can see it sit a hair cocked n wheel appear to be torqued only to come loose shortly thereafter.

[ZR]

Shoot, almost forgot, when torquing your wheels.............

-while holding the rim firmly n square against the hub / mounting flange, snug the nuts up with a 3/8 ratchet or similar.
-lower the jack till tires on the ground, with torque wrench snug first nut up but DO NOT take to full torque. Move to nut number two of your pattern (yes pattern is uber important) and do the same. Good idea to do same on nut number three then on number four take it to full torque. Make nut number four your new number one and continue with pattern.
Idea being, if you were to take nut number one to full torque with little to no pressure on any of the others, you will unknowingly cock the wheel which will screw up torque readings on the rest of em.

[Ponyryd]

Corrosion on the wheels mounting flange can see it sit a hair cocked n wheel appear to be torqued only to come loose shortly thereafter.

Said he cleaned the hubs though, otherwise yes, I fully agree.

[ZR]

Maybe hub on the vehicle but not back of the rim. Dunno.

[5.4MarkVIII]

Didn't do the back of of the rim. Could be the issue I suppose.

All the others i tourqued seem fine